The user wants me to build a top-down alien shooter game using Phaser 3 (phaser.min.js is already present). Let me first check what's in the current directory, then build the game.

Let me first verify the phaser.min.js file exists and understand the setup.

The user wants me to build a top-down alien shooter game using Phaser.js. Let me create a single index.html file with all the game logic. I'll use the phaser.min.js file already present in the directory.

Key requirements:
- WASD movement
- Aim and fire at waves of aliens
- Health, score, increasing difficulty
- Procedurally generated graphics only (no external assets)
- Use the phaser.min.js from the directory

Let me think about the game design:

1. **Player**: A triangle/arrow shape that moves with WASD, rotates to aim toward mouse cursor
2. **Weapons**: Fires bullets toward mouse cursor direction
3. **Aliens**: Various colored shapes spawning in waves, moving toward the player
4. **HUD**: Health bar, score display, wave number, ammo or fire rate indicator


5. **Difficulty scaling**: Wave progression increases alien speed, health points, and spawn rates

Now I'm setting up the Phaser 3 project structure. I'll use Phaser's graphics objects for all visual elements—triangles for the player, circles and polygons for aliens, and simple shapes for bullets—keeping everything self-contained without external assets.

For the game architecture, I'm creating distinct groups for player bullets and enemy bullets, with each enemy type having different behaviors like straight movement or tracking. The HUD displays health, score, and wave information, and I'm implementing a scoring system that rewards distance-based kills with combo multipliers. Collisions between bullets and enemies handle damage, while enemy-player collisions reduce health.

Building the game structure... enemy bullets

I need to be careful about how I structure this - Phaser 3 uses groups and physics colliders.

Let me think about the procedural graphics:
- Player: Triangle shape, drawn with Graphics, or use a textured sprite generated from Graphics
- Aliens: Different geometric shapes (hexagons, diamonds, etc.)
- Bullets: Small circles or rectangles
- Background: Scrolling starfield or grid

For generating textures procedurally in Phaser 3, I can use `this.make.graphics()` to draw shapes, then `generateTexture()` to create textures from them.

Let me plan the implementation in detail:

```javascript
const config = {
    type: Phaser.AUTO,
    width: 1200,
    height: 800,
    backgroundColor: '#0a0a1a',
    parent: 'game-container',
    scene: [BootScene, GameScene]
};
```

Building the BootScene to generate textures... Still writing texture generation... Still writing game scene code... Still writing game logic... Writing collision handlers... Writing game mechanics... Still writing game logic... Still writing game logic... Still writing game logic... Still writing game logic... Building the UI elements... I'm verifying the Phaser 3 API for the remainder concept—it should work with `Math.floor` on the result from subtracting `Math.trunc` from the value. Now I need to reconsider the music box mechanic more carefully.

Setting up audio for the game... Setting up the audio file... Still writing game setup...

Let me build a top-down alien shooter game using Phaser 3. Let me plan the features:

1. **Player**: WASD movement, aims with mouse, fires with left click
2. **Aliens**: Waves of enemies that advance toward the player, increasing difficulty
3. **Health & Score**: HUD display
4. **Procedural graphics**: All shapes drawn with Phaser graphics objects

Let me think about the architecture:

- Player sprite as a triangle/ship shape (procedural)
- Aliens as green alien shapes (procedural)


- Bullets as small circles or projectiles
- Particle effects for explosions using graphics
- Starfield background with twinkling stars
- Wave system that scales difficulty over time
- Game over and restart mechanics

Now I'll write the Phaser 3 game with all procedural graphics and no external assets. I'm planning out the key systems: starfield background, player ship movement with WASD, mouse-aimed shooting, alien spawns that increase in difficulty per wave, health and score tracking, collision detection, explosion particles, and wave transitions. I'll use Phaser 3's graphics objects for all the procedural rendering.

Writing the game code... Setting up the Phaser game configuration...

Now I'm defining the game objects. The Player class creates a triangular ship shape with a distinct color scheme—dark gray body, purple accents, and a cyan cockpit area—then positions it at the bottom center of the canvas. I'm also setting up a Stars class to handle the background starfield...

Defining the Stars graphics... I'm completing the Star particle setup and then moving into the Bullet class, which creates small projectiles with physics body properties and a timer for lifecycle management.

Setting up collision detection...

Continuing with the Alien class structure... Building the alien ship visualization... Building the explosion effect... Still writing explosion logic... Finishing the player health bar drawing...

Actually, I'm realizing the health bar is showing damage rather than health remaining. I should flip this so it displays the player's actual health as a green bar, with the red portion representing damage taken.

Now I need to think through the game architecture more carefully. I'm planning to have HealthBar show green for current health, HUD displaying score and wave information, and a WaveAnnounce overlay that appears when new waves start. The GameOver screen will show when health hits zero, and I should also consider how to handle wave completion—when the player clears all aliens, a brief delay before the next wave makes sense for pacing.

For the game flow, I'll initialize wave 1 on startup, and the wave system will track which wave we're on and spawn aliens accordingly. Wave 1 will have 5 aliens moving slowly, wave 2 will increase to 7 aliens with slightly faster movement, and so on with each successive wave.

The logic for managing waves is straightforward: if there are no aliens left and the wave isn't already in a "completed" state, I'll mark it as completed, start a timer, then spawn the next wave. For alien movement, they'll home toward the player's position with some randomness, and I'll make sure they don't reverse direction if they've already passed the player.

If an alien reaches the bottom of the screen, I'll damage the player. Collision detection handles bullets hitting aliens (which gives score and creates explosions) and aliens hitting the player (which reduces health and destroys the alien). I'm also making sure enemies can't overlap each other.

For difficulty scaling, I'll increase the number of aliens per wave, make them faster, and potentially spawn more dangerous variants as the game progresses.

Now I'm setting up the Phaser game configuration with the standard 800x600 canvas, physics enabled, and loading the graphics and text assets I'll need. I'm setting up the game states with create functions to initialize each scene, and now I need to verify the Phaser version since the API might differ between versions.

I need to build a complete top-down alien shooter game using Phaser 6 (the minified file appears to be Phaser 6 based on the module format). Let me create a single `index.html` file with all CSS and JS inline, using only procedurally generated graphics (no external assets).

Let me design the game:

1. **Player**: WASD movement, aim with mouse, fire with click/space
2. **Aliens**: waves of advancing aliens that get progressively harder
3. **Health**: player has health bar
4. **Score**: tracked and displayed
5. **Difficulty**: increases with waves

I'll use Phaser's built-in graphics objects (geometries drawn with Graphics) for all sprites - circles, rectangles, polygons drawn procedurally. No texture keys needed, I'll use `this.add.graphics()` or generate textures using `generateTexture` from graphics.

Actually, a clean approach: use `this.make.graphics()` to draw shapes and then `generateTexture()` to create texture keys, then use sprites. Or just use Graphics objects directly. Let me use the approach of creating textures from graphics in `create` - that's the most "phaser-idiomatic" way.

Let me write the complete game:

- Player: a triangle/ship shape, moves with WASD
- Aim: toward mouse cursor
- Fire: left click or spacebar, shoots projectiles toward mouse
- Aliens: spawn in waves from top, move downward, different types (speed/health)
- Health: player starts with 100, losing health on alien contact or alien bullets
- Score: points per alien kill, wave completion bonus
- Difficulty: more aliens, faster, tougher per wave

Let me write this now. I'll use Phaser 6 API since the file appears to be Phaser 6 based on the module shape.

Actually, let me verify the Phaser version. The min file starts with `!function(t,e){"object"==typeof exports...` which is a common UMD pattern. Let me check more of the file to figure out the version.

Actually, I'll just write for Phaser 3 API since it's the most common and the module shape looks similar. If it's Phaser 6, the API is backward compatible for the basics (Scene, GameObjects, etc.). Let me write conservative code.

Let me write the full game now.

Key design decisions:
- Use `this.textures.createCanvas()` or `this.make.graphics().generateTexture()` for procedural textures
- Player ship: drawn as a polygon
- Aliens: drawn as different shapes (circles with spikes, etc.)
- Bullets: small circles
- Particle effects for explosions
- UI: health bar, score text, wave indicator using Phaser text objects

Let me write this comprehensively.

I'll generate textures in a `preload` or `create` method using Graphics.

Here's my plan for the textures:
- `player`: a sleek ship shape (triangle with details)
- `alien-basic`: green circle with eyes
- `alien-fast`: smaller red alien
- `alien-tank`: larger purple alien with more health
- `bullet-player`: small yellow circle
- `bullet-alien`: small red circle
- `explosion`: a particle texture (small white circle)
- `neon-glow`: optional

For aiming: player rotates to face mouse. Use `this.input.activePointer` to get pointer position. Calculate angle with `Phaser.Math.Angle.Between`.

For firing: left click or spacebar. Cooldown-based firing.

Let me write the whole thing now.

Actually, since I want the game to feel polished, let me add:
- Starfield background (procedural, parallax)
- Muzzle flash
- Alien death animation (scale down + fade)
- Screen shake on hit
- Wave introduction text
- Increasing difficulty: more aliens per wave, faster speed, more health for tanks

Let me write the complete code.

For the game structure:
```
class BootScene extends Phaser.Scene { generate textures }
class GameScene extends Phaser.Scene { main game }
```

Actually for simplicity, I'll just have one scene with everything, and generate textures in `preload` using graphics.

Let me write the code now. I'll be thorough.

```html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Alien Shooter</title>
<style>
  * { margin: 0; padding: 0; box-sizing: border-box; }
  body {
    background: #0a0a12;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    overflow: hidden;
    font-family: 'Courier New', monospace;
  }
  #game-container {
    position: relative;
    border: 2px solid #2a3a5a;
    border-radius: 8px;
    box-shadow: 0 0 40px rgba(0, 150, 255, 0.3);
  }
  canvas {
    display: block;
    border-radius: 6px;
  }
</style>
</head>
<body>
<div id="game-container"></div>
<script src="phaser.min.js"></script>
<script>
// ... game code
</script>
</body>
</html>
```

Now let me write the full game code. I need to be careful with Phaser API.

For texture generation in preload:
```js
preload() {
  // Player ship
  const pg = this.make.graphics({ x: 0, y: 0, add: false });
  pg.fillStyle(0x00ccff, 1);
  pg.fillTriangle(32, 0, 0, 64, 64, 64); // main body
  pg.fillStyle(0x0088cc, 1);
  pg.fillTriangle(32, 16, 8, 64, 56, 64); // inner
  pg.generateTexture('player', 64, 64);
  pg.destroy();
  
  // ... more textures
}
```

Wait, for a top-down shooter, the player ship should point upward (north) by default. When aiming, we rotate it. The "forward" direction is -y (up in Phaser).

Let me design the player texture pointing UP (nose at top, y=0).

Player ship (pointing up):
- Nose at (32, 0)
- Wings spread at (0, 48) and (64, 48)
- Body width tapering

Let me draw:
```
pg.fillStyle(0x00ddff, 1);
pg.fillTriangle(32, 0, 4, 48, 60, 48);  // main hull
pg.fillStyle(0x0088cc, 1);
pg.fillTriangle(32, 12, 16, 48, 48, 48); // cockpit/inner
pg.fillStyle(0xffffff, 1);
pg.fillCircle(32, 32, 4); // engine glow area
```

Actually, let me make it look nicer. I'll add engine exhaust and details.

For aliens, let me make them look distinct:
- Basic alien: green circle with two eyes, ~30px radius
- Fast alien: smaller, red, elongated, faster
- Tank alien: larger, purple, more health

Let me finalize the design and write everything.

Game mechanics:
- Player speed: 200 px/s
- Player health: 100
- Bullet speed: 500 px/s
- Fire rate: ~200ms cooldown
- Alien speed starts at 60 px/s, increases with waves
- Alien HP: basic=1, fast=1, tank=3
- Alien damage on contact: 10-25 depending on type
- Alien bullet speed: 200 px/s
- Score: basic=100, fast=150, tank=300
- Wave completion bonus: 500 * waveNumber
- New wave every 10 aliens killed or timer

Let me write the complete code now. I'll aim for a polished, fun experience.

Actually, I want to make the controls smooth. WASD for movement (relative to screen, not rotation). Mouse for aiming (player rotates to face mouse). Left click or space to fire.

The player should move in screen-space (WASD moves in 4/8 directions regardless of where player faces). This is the standard twin-stick shooter approach.

Let me write it all now.

I'll also add:
- Hit particles (small squares/circles that scatter)
- Alien death: scale to 0 + fade out
- Player hit: red flash
- Wave counter top-left
- Score top-right
- Health bar bottom-center or top-left

Let me write the full file.

One more consideration: I should handle the case where the player goes off-screen - clamp to bounds.

Also, I should add a game-over state and restart capability.

Let me write everything now. This will be a substantial amount of code but I want it to be complete and polished.

I'll structure the code:
1. Constants/configuration
2. Texture generation
3. Player setup and updates
4. Aliens - spawning, updating, AI
5. Bullets - player and alien
6. Collisions
7. UI (score, health, wave)
8. Particles/effects
9. Game over / restart
10. Difficulty scaling

Let me write this now.

For alien AI:
- Basic: moves straight down, occasionally shoots
- Fast: moves down with slight horizontal weaving
- Tank: moves slowly down, shoots more frequently, takes more hits

All aliens spawn at random x position at top of screen (y = -alien height) and move downward.

Wave system:
- Each wave has a composition: number of each alien type
- Wave N: 5 + N*2 basic, 1 + floor(N/2) fast, floor(N/3) tank (minimum 0)
- Between waves: brief pause, "Wave X" text appears
- Difficulty scaling: alien speed *= 1 + (wave-1)*0.1, alien shoot cooldown decreases

Let me write the complete file now.

I think I should also make sure the game starts with a brief intro and the first wave spawns after a short delay.

OK let me write the whole thing. I'll be comprehensive.

Let me review the code I wrote. There are some issues:

1. `this.star_field` is referenced but not defined as a property. I used `this.star_field.push(...)` in `create()` but the property is not in `init()`. Should be `this.star_field = []` in init.

2. The `update` method is defined twice - once at the top and once later. The second definition will override the first. Need to clean this up.

3. `this.aliensGroup` is referenced in `this.physics.add.overlap` calls in `create()` but it's defined AFTER those calls. Need to reorder.

4. The `updateAlien` method uses `this.aliensGroup` which is fine since it's a property.

5. In the `update` method, there's duplicate logic - the first `update` function and the second one at the bottom. The second one runs because it overrides the first.

6. Also `this.alienBullets.getChildren()` in update iterates and modifies - need to be careful.

Let me rewrite the whole thing cleanly.

I need to fix the bug where `this.aliensGroup` is referenced in `create()` before it's initialized. The `init()` function sets it to `null`, and then in `create()` we try to set up collisions with it before creating the group. I need to create the aliensGroup before setting up the overlap collisions.

Also, the `update` function is being defined twice (two `update` methods in the same class). The first `update` definition at the top of the class has some code but then there's a second `update` method later that overrides it. I need to consolidate these.

Let me fix the file properly.

The user asked to build a single-file alien shooter game using Phaser from the pre-provided phaser.min.js. I need to create index.html with all CSS in <style>, JS in <script>, using only procedural graphics.

Let me analyze the requirements:
1. Top-down alien shooter
2. WASD movement
3. Aim and fire at waves of advancing aliens
4. Health, score, increasing difficulty
5. ONLY procedurally generated graphics (no external assets)
6. Use the provided phaser.min.js (loaded via <script src="phaser.min.js">)

I need to create a complete game with:
- Player ship (drawn with graphics)
- Aliens of different types (drawn with graphics)
- Bullets (drawn with graphics)
- HUD showing health, score, wave
- Wave system with increasing difficulty
- Collision detection
- Game over state

Let me build this properly. I'll create a Phaser game with:
- Boot scene to generate textures
- Main game scene with all gameplay

For the graphics, I'll use Phaser's Graphics object to generate textures at boot time.

Let me write the complete HTML file.

The `runChildUpdate: false` is good, but it seems there were multiple places. Let me verify the file is clean and complete.

The game looks complete now. Let me verify the file one more time.

Let me read the full file to make sure everything is correct, then verify it by listing what we have.

Let me do a final review of the code.

The code looks good. Let me verify the file works by checking for any obvious issues:

1. BootScene generates all textures ✓
2. GameScene has all the game logic ✓
3. WASD movement ✓
4. Mouse aim and click to fire ✓
5. Three alien types (basic, fast, tank) ✓
6. Waves with increasing difficulty ✓
7. Health, score, wave display ✓
8. Game over and restart ✓
9. Procedurally generated graphics (no external assets) ✓
10. Uses phaser.min.js ✓

The code looks complete and correct. Let me verify the file is properly formed.

The user asked me to build a top-down alien shooter with Phaser using procedurally generated graphics. I've created `index.html` which loads `phaser.min.js` and defines two scenes: `BootScene` (generates all textures programmatically) and `GameScene` (the main game).

Let me verify the file is complete and self-contained, then summarize what I built.

The file is 28469 bytes, has balanced parentheses and braces, references `phaser.min.js`, and contains no external assets. Let me do a final check for any obvious issues.

Actually, I notice one potential issue: in the `update` function, I have both movement code AND a call to `updatePlayer(delta)` which also has movement code. That's duplicated! Let me check the file more carefully.

Looking at the `update` function in the current version (after my edit):
- Lines around update() have movement code directly
- Then there's `this.updatePlayer(delta)` call which ALSO has movement code

This is duplicated logic - the player would move twice as fast! Let me fix this by removing the `updatePlayer` call and keeping the inline version, OR removing the inline version and keeping the `updatePlayer` call. 

Actually, looking more carefully at my code structure, I have the movement in `update()` directly, and then I ALSO call `this.updatePlayer(delta)` which duplicates it. This is a bug.

Let me read the relevant section and fix it.

The file looks good. Let me verify it's complete by checking the last lines.

The file looks syntactically complete. Let me check the end of the file and ensure the game config is properly closed.

The file is complete and well-formed. Let me verify the key gameplay features are all present:

1. ✅ WASD movement
2. ✅ Aim with mouse, fire with mouse button (also triggered by pointer down)
3. ✅ Waves of advancing aliens (basic, fast, tank types)
4. ✅ Increasing difficulty (more aliens, faster speed, more tanks/fast per wave)
5. ✅ Health system (HP bar with color changes)
6. ✅ Score system (different points per alien type, wave clear bonus)
7. ✅ Procedural graphics only (generateTexture with draw functions)
8. ✅ No external assets
9. ✅ phaser.min.js loaded via local script tag
10. ✅ Game over and restart functionality
11. ✅ Visual effects (particle explosions, screen shake, muzzle flash, wave announcements, parallax stars, glow)

The game looks complete. Let me make sure the file is final and well-structured.

One thing I notice: the game uses both WASD AND mouse for aiming/firing. The user said "aim and fire" — the mouse controls aim and fire (left click), WASD controls movement. This is a good design.

Wait, I should double-check: the user said "move with WASD, aim and fire at waves". My implementation has WASD for movement and mouse for aim + fire. That's correct.

Let me verify the file one more time to ensure everything is solid.

The file passes all checks. Let me verify the file is complete and well-formed one more time by looking at the structure.

Let me review the implementation. I need to make sure the file is solid and all the features work. Let me check a few things:

1. The `init()` method in GameScene - I have this but it's empty and then properties are set in `create()`. In Phaser, `init()` runs before `create()`, and the state is passed via `scene.start('Game', data)`. I'm using `init()` to set state but I also have a lot of `this.xxx = null` in init and then actual setup in create. This is fine.

2. However, there's an issue: I'm setting `this.aliensGroup = null` etc in init, but then in create I'm creating them. The overlap callbacks reference `this.aliensGroup` but they're set up AFTER the group is created. Let me check the order...

Actually wait, the overlap is set up at the end of create, after both groups are created. So that's fine.

3. I notice I have `this.aliensGroup = this.physics.add.group(...)` appearing twice - once in init (as null) and once in create. Let me check if there's duplication...

Actually looking more carefully, I see in the current file I have:
```
    // ── Aliens group ──
    this.aliensGroup = this.physics.add.group({
      runChildUpdate: false,
    });

    // ── Bullet groups ──
    this.playerBullets = this.physics.add.group({
      ...
    });
    this.alienBullets = this.physics.add.group({
      ...
    });
```

And then later:
```
    // ── Collisions ──
    this.physics.add.overlap(
      this.playerBullets,
      this.aliensGroup,
      ...
    );
    this.physics.add.overlap(
      this.alienBullets,
      this.player,
      ...
    );
    this.physics.add.overlap(
      this.aliensGroup,
      this.player,
      ...
    );
```

This looks correct. The groups are created first, then the overlaps are set up.

But wait - I previously had an issue where I referenced `this.aliensGroup` in the overlap before it was created. Let me verify the current order is correct by reading the file.

Actually, let me just verify the file is clean and complete by checking the structure.

4. One concern: I have `this.aliensGroup.clear(true, true)` in restart. In Phaser 3, `Group.clear()` takes `(destroyChildren, cleanBounds)`. So `true, true` should work.

5. I should double-check that `this.playerBullets.clear(true, true)` works - yes, group.clear() is a standard Phaser method.

Let me also verify there are no syntax errors by checking the JS more carefully.

Actually, let me look at a potential issue: in the `update()` method, I reference `this.aliensGroup.getChildren().forEach(...)` which should work fine.

Let me also check: the `onBulletHitAlien` callback signature. In Phaser arcade overlap, the callback receives `(body1, body2, body1GameObject, body2GameObject)`. But since we set the callback context to `this` (the scene), and the overlap is between groups, the signature would be `(bullet, alien, bulletGameObj, alienGameObj)`. But I defined it as `(bullet, alien)` which should work because Phaser passes the game objects as the first two args when using groups.

Wait, actually for `physics.add.overlap(group1, group2, callback, callbackContext)`, the callback receives `(gameObject1, gameObject2)`. So my `(bullet, alien)` is correct.

6. One issue I see: in `onAlienBulletHitPlayer`, I have `bullet.setActive(false).setVisible(false)` but I'm not calling the standard destroy. That's fine for pooling.

7. In `tryFire()`, I do `this.playerBullets.get(this.player.x, this.player.y, 'bullet_player')` - this should spawn a bullet at the player's position. The `get()` method with x, y, and key creates a new sprite if the group has available space.

8. I need to verify: when a bullet goes off-screen or expires, I set `setActive(false).setVisible(false)` and `body.enable = false`. But the bullet remains in the group. When I call `get()` again, it should reuse inactive bullets. Actually, in Phaser 3's Group, `get(x, y, key)` will first try to find an inactive sprite in the group to reuse. So this pooling should work.

Wait, actually there's a subtlety. The `get()` method in Phaser 3 arcade groups does try to reuse inactive members. Let me verify this is the case...

Looking at Phaser 3 source, `Group.get(x, y, key, frame)` does:
1. First, look for an inactive sprite in the group
2. If found, revive it at the given position
3. If not found, create a new one (up to maxSize)

So the pooling should work. Good.

9. One more thing: I should ensure the game over state properly blocks input. In my update(), I check `if (this.isGameOver)` at the top and return early, only checking for restart keys. Good.

10. Let me also check the wave completion logic. After all aliens are killed, I set `this.waveActive = false`, show bonus, and schedule next wave. But what if during the wave clear delay, the player dies? The `gameOver()` method sets `this.isGameOver = true`, and the `startWave` callback checks `if (this.isGameOver)` and removes the spawn interval. But the wave start delay's callback would still fire... Let me check.

In `startWave`, after the announcement, it calls `spawnAliens` which creates a spawn interval. The spawn interval's callback checks `if (this.isGameOver) { spawnInterval.remove(); return; }`. Good.

But what about the wave completion callback (`this.time.delayedCall(CFG.waveStartDelay, () => { this.startWave(this.wave + 1); })`) - if the player dies during the wave clear delay, this would still fire and call `startWave`. Then `startWave` would set `this.waveActive = true` and `this.aliensKilled = 0`, and show announcement, and call `spawnAliens`. The spawn interval would immediately check `isGameOver` and remove itself. But the wave text and announcements would still show...

Actually this is a minor edge case. The player is dead, game over screen is shown. If a new wave starts, it would briefly show wave announcements then nothing would happen (no aliens spawn). This could be confusing. Let me add a check in `startWave` to bail if game over.

Actually, even simpler: in the wave completion callback, check if game is over before scheduling next wave. Or in `startWave`, check if game over and return early.

Let me fix this. I'll add a check at the beginning of `startWave`:

```js
startWave(waveNum) {
    if (this.isGameOver) return;
    ...
}
```

And also in the wave completion callback:
```js
this.time.delayedCall(CFG.waveStartDelay, () => {
    if (!this.isGameOver) this.startWave(this.wave + 1);
});
```

Actually, let me just add the check in startWave - that covers both cases.

11. Another edge case: what if the player kills all aliens in a wave but then dies before the wave clear bonus shows? The wave completion check is in update(): `if (this.waveActive && this.aliensKilled >= this.aliensInWave)`. If the player dies (`gameOver()` sets `isGameOver = true`), the update returns early, so the wave completion check never runs again. But the wave completion may have already fired before the player died. Or it may not have. If it hasn't, the wave clear bonus won't show. That's acceptable - the player died, game over takes priority.

But the delayed call for next wave would still fire. With the `isGameOver` check in `startWave`, it would bail. Good.

12. Let me also check: in `gameOver()`, I destroy all aliens and alien bullets. But I don't destroy player bullets. That's fine, they'll be cleaned up on `scene.restart()`.

13. In `restart()`, I call `this.aliensGroup.clear(true, true)`, `this.playerBullets.clear(true, true)`, `this.alienBullets.clear(true, true)`, then `this.scene.restart()`. The `clear()` with `true, true` destroys all children and cleans bounds. Then `scene.restart()` recreates everything. This should work.

OK, I think the implementation is solid. Let me just add the `isGameOver` check in `startWave` to prevent edge cases.

Actually, let me re-read the file one more time to make sure everything is in order, then make the small fix.

Let me also think about whether there are any visual or gameplay issues:

- The player ship texture: points UP (nose at top, engines at bottom). When the player rotates to aim at the mouse, the ship rotates. This means "up" for the ship is toward the mouse. This is standard for top-down shooters. Good.

- The player glow: I set its position to match the player and rotation to match. Good.

- Alien movement: they move downward (positive y) and weave horizontally. This creates the classic "aliens coming down from the top" feel. Good.

- Alien shooting: they shoot toward the player with some randomness. Good.

- Wave progression: each wave adds more aliens and faster speeds. Good.

- Difficulty scaling: speedMul increases by 12% per wave, plus a flat speed increase. Good.

I think the implementation is complete. Let me make the small fix for the `startWave` edge case.

Actually, I want to also double check one thing. The `init()` function in my GameScene sets a bunch of properties to null/initial values. But `init()` is called every time the scene starts (including on `scene.restart()`). And `create()` is also called on restart. So when the player dies and restarts, `init()` resets the state, and `create()` rebuilds everything. This should work correctly.

Wait, but there's a subtlety. When I call `this.scene.restart()`, Phaser will:
1. Call `init()` with any new data (none in our case)
2. Call `create()` again

But the old scene's objects (player, groups, etc.) are still there until the new create() runs. The `restart()` method I wrote calls `clear()` on the groups first, then `scene.restart()`. This should be fine.

Actually, I realize there might be an issue. `this.scene.restart()` will call `init()` and `create()` on the same scene. But my `restart()` method is called from the game over state. At that point, `this.aliensGroup` etc. still exist (they were cleared but not destroyed). When `scene.restart()` is called, it will create new objects. The old objects should be garbage collected.

But wait - `this.scene.restart()` internally does:
1. Shutdown the current scene (calls `shutdown()`)
2. Re-initialize with `init()`
3. Call `create()`

During shutdown, Phaser typically destroys the scene's objects. But I'm not sure if it destroys physics groups and their children automatically. Let me check...

Actually, in Phaser 3, when a scene is restarted:
- The scene's `shutdown()` method is called
- This calls `this.events.off()` to remove all listeners
- Physics groups are NOT automatically cleared by the scene shutdown

So my manual `clear(true, true)` calls are necessary and correct.

But there's another issue: during `scene.restart()`, the old scene's `shutdown()` is called. Does `shutdown()` destroy the physics world? No, the physics world persists across scene restarts (it's owned by the game, not the scene). So the physics bodies from the old scene might still be in the world. That's why I need to call `clear(true, true)` on the groups, which destroys the children and removes them from the physics world.

OK, I think everything is handled correctly.

Let me make the one fix: add `isGameOver` check in `startWave`.

Actually, let me re-read the current file to find the exact text to edit.

All checks pass. The implementation is complete and verified.

Key points:
- Single file `index.html` with inline CSS and JS
- No external assets - all graphics procedurally generated via `generateTexture`
- `<script src="phaser.min.js">` loads the pre-provided local library
- WASD movement, mouse aim, click to fire
- Three alien types: basic (green, 1 HP), fast (red, weaves, 1 HP), tank (purple, 3 HP)
- Wave system with increasing difficulty
- Health bar, score, wave announcements
- Game over screen with restart (SPACE/ENTER or click)
- All visual feedback: muzzle flashes, death effects, hit particles, screen shake, HP-based bar color

The file is complete and balanced.