The user wants me to build a top-down alien shooter game using Phaser.js (phaser.min.js) with:
1. WASD movement
2. Aim and fire mechanics
3. Waves of advancing aliens
4. Health, score, and increasing difficulty
5. Procedurally generated graphics only (no external assets)
6. Single self-contained index.html file

Let me build a complete, polished game.

The file has been written. Let me verify it exists and check that phaser.min.js is also present in the directory.

Both files are present. The index.html is 577 lines and phaser.min.js is ~1.1MB. Let me verify the HTML is valid by checking for any obvious issues, and also make sure the game logic is complete and correct.

Let me review the code for any issues:

1. The player texture creation uses `game.make.graphics` - this should work in Phaser 3
2. The alien textures are created with different colors and sizes
3. The bullet textures are created
4. The explosion and particle textures are created
5. The shield texture is created but not actually used in the game logic (I created it but don't use it - that's fine, it's just unused)
6. The star field is created as a container for parallax effect
7. The wave system spawns aliens from top, left, and right
8. Difficulty increases with wave number (more aliens, faster, tougher types)
9. Health, score, and HUD are all implemented
10. Game over screen with restart button

Let me check if there are any issues with the Phaser API usage. In Phaser 3:
- `game.make.graphics` should be `this.make.graphics` in a scene context, but in `preload` it should work as `this.make.graphics`
- Actually, looking more carefully, in `preload()` I'm using `game.make.graphics` which might not work because `game` is the Phaser.Game instance, not the scene. In the preload function, `this` refers to the scene, so I should use `this.make.graphics`.

Wait, let me re-read the code. The preload function is called as a scene method, so `this` should be the scene. But I'm using `game.make.graphics` where `game` is the Phaser.Game instance. This might not work correctly.

Actually, in Phaser 3, `this.make` is available in scenes, and `game.make` might also work but it's not the standard approach. Let me fix this to use `this.make.graphics` instead.

Also, I need to check if `setLifetime` is a valid method on physics sprites. In Phaser 3, there's no built-in `setLifetime` method on game objects. I'd need to track lifetimes manually or use events. Let me fix this.

Actually, looking at the code more carefully, I see that `bullet.setLifetime(1500)` is called but Phaser doesn't have a `setLifetime` method on Game Objects. I need to handle bullet cleanup differently.

Let me also check the `generateTexture` method - in Phaser 3, it's `this.textures.generateTexture` or `this.make.graphics` with `generateTexture`. Actually, the correct way is:

```javascript
const graphics = this.make.graphics({ x: 0, y: 0, add: false });
// ... draw ...
graphics.generateTexture('key', width, height);
graphics.destroy();
```

So `this.make.graphics` is correct, not `game.make.graphics`.

Let me also check the alien bullet damage - I'm using `bullet.getData('damage')` but I never set that data. I should set it when creating alien bullets.

Let me also check the alien firing mechanism - I have `canFire` and `shootRate` properties but I don't actually implement the alien shooting logic in the update loop! I need to add that.

Let me also check if there are issues with the `Phaser.Math.Angle.Between` usage and the rotation math.

Let me fix all these issues and rewrite the file properly.

The syntax is fine. But there are some logical issues I should fix:

1. `game.make.graphics` should be `this.make.graphics` in scene methods
2. `setLifetime` doesn't exist in Phaser 3 - need manual cleanup
3. Alien shooting logic is missing
4. `bullet.getData('damage')` is never set for alien bullets
5. The `generateTexture` method - need to verify this works with `this.make.graphics`

Let me rewrite the file with all these fixes. I'll also make the game more polished with:
- Proper alien shooting mechanics
- Bullet lifetime management
- Better particle effects
- Shield/invincibility frames after hit
- Score popups
- Better wave progression

Let me rewrite the entire file with these fixes.

The file has been written. Let me verify it's correct by checking the syntax and making sure everything is in order.

The file looks good. Let me verify all the key features are present:

1. ✅ WASD movement
2. ✅ Mouse aim and click to fire
3. ✅ Waves of advancing aliens
4. ✅ Health system
5. ✅ Score system
6. ✅ Increasing difficulty (wave-based scaling)
7. ✅ Procedurally generated graphics (no external assets)
8. ✅ No external CDN or network requests
9. ✅ Single self-contained index.html file
10. ✅ phaser.min.js loaded locally

The game has:
- Player ship with WASD movement and mouse aiming
- 4 alien types with different colors, sizes, and difficulty
- Wave system with increasing alien count and difficulty
- Alien shooting mechanics (starting from wave 2)
- Health bar with color changes based on health level
- Score with popups
- Explosion effects and particles
- Invincibility frames after taking damage
- Game over screen with restart
- Star field background with parallax
- Shield/invincibility visual feedback

Everything looks complete and correct. The game should be fully playable.