First, let's check the directory and the phaser file.

Build the game. A single index.html that includes a script src="phaser.min.js", with inline CSS/JS. Phaser 3.

Features:
- Top-down shooter, player is a triangle/ship, WASD movement, aiming with mouse, fire on click (or hold), maybe also auto-fire toward cursor direction.
- Waves of advancing aliens, HP bar, score, difficulty scaling (increased spawn count, speed, HP).
- Procedural graphics: generate textures with Graphics, generateText for text, maybe also generateSound (no audio needed; "no external audio assets" — procedural audio via WebAudio is OK but keep it simple; small beeps generated via WebAudio are possible but not required. Either omit audio or do small WebAudio blips. For flair, add simple WebAudio blips.)

Write the code.

Design:
- Game world 960x600, scale FIT.
- Player: triangle texture facing right (rotation 0 = right). Rotates to mouse direction.
- Bullets: small circles, move in aim direction, disappear off-screen, destroy aliens.
- Aliens: procedurally drawn blobs/creatures, spawn from edges and advance toward player. Contact damage to player + knockback + short invincibility.
- Waves: wave N has 4 + 2N aliens, spawn with intervals; wave banner; 3-second rest between waves.
- HP 100, slowly regenerates? No, no regeneration; pickup? Keep it simple: HP, game-over screen, R to restart.
- Score: 10 points per kill, maybe combo.
- Difficulty: speed and HP scale with wave.
- Particles: Phaser particle emitter using generated sprite textures (small colored circles).
- HUD: text for HP bar graphic, score, wave.
- Stars background: static generated starfield texture or drawn stars.

Alien types: basic (chaser), fast (small and fast), tank (large and slow, high HP). Colors are different.

Implementation details:

createTextures with this.make.graphics().

Player texture: draw a triangle with a cockpit. Use generateTexture.

Bullet: 6x14 rectangle, or a glowing circle.

Alien textures: 3 kinds, drawn with arc and spiky shapes — random-looking spikes around a circle? Deterministic drawing.

Particles: 8x8 white circle, tinted per emitter.

WebAudio: a simple beep function using oscillators for shooting/hit/explosion; guard with try/catch.

Game over: overlay text, R or click to restart.

Camera shake on player hit.

Write index.html.

I noticed I left an unnecessary line: `if (this.keys.W.isDown || this.cursor.isDown && this.input.keyboard._keys && false) {}` — this is dead code that should be deleted. Also, `muzzle.setParticleTint` — in Phaser 3.60 and later, `setParticleTint` is a static method of Particles: it's not an emitter method; it's `emitter.setParticleTint`. In fact, the emitter does have `setParticleTint`. And does the emitter's `explode` accept a config for alpha? `explode(count, config)` — it sets properties on each particle; `lifespan` is also allowed. `setLifeSpan(120)` is an emitter method — no problem.

Also, the `size * 2` in boom() for `explode` uses an object config without speedMin — that's fine.

One issue: `p.setAlpha(0.9)` on a particle emitter — this sets the emitter's alpha, so it's fine.

`this.input.mouse.on("pointerdown", ...)` — does `this.input.mouse` exist in Phaser 3? InputPlugin has `.mouse` in Phaser 3.60 (added as an alias?). Actually, was `input.mouse` added in Phaser 3.50? To be safe, better to use `this.input.on('pointerdown', ...)`. Let's change it to that.

Also, check the version of phaser.min.js to confirm the API (particle emitter: in 3.60, `this.add.particle(texture, x, y)` is correct; `setParticleTint` exists on the emitter).

Let's clean up the dead code lines and fix the input. Also, `emitter.explode(4, 0)` with numeric 0 as the second argument — explode(0) clears it... actually, `explode(quantity, config)` with a numeric config is interpreted as lifespan in ms. No problem.

Let's quickly check the Phaser version.

(Thinking note) No REVISION found via that grep (maybe the format is different). setParticleTint does exist — good. Clean up the unnecessary lines and the input.mouse lines.

Check the Phaser version in order to confirm the emitter API (the signature of `explode`, `setLifeSpan`). `this.add.particle(texture, x, y)` is the 3.60+ API. Quickly verify the version.

Phaser 3.80.1 — the emitter API is the 3.60+ one: `this.add.particle(texture, x, y)`, `setParticleTint`, `explode(count, config)`, `setLifeSpan`. All fine.

One point: with Phaser 3.80's `explode`, config object properties like `lifespan` are allowed. Good.

Check for syntax errors: extract the JS and run `node --check` on it.

Also, if possible, I could try a simple runtime smoke test in a DOM-less environment too, but — Phaser requires canvas/WebGL. Skip. The syntax check and careful API review should be sufficient.

Another review point: `this.muzzle`'s emitter — I'm calling `this.muzzle.explode(4, 0)`, but the numeric value of the second argument is treated as lifespan, which is fine. `setLifeSpan(120)` is also fine.

`boom()` — `p.setAlpha(0.9)` on the emitter — does the 3.60+ emitter have setAlpha? The emitter's setAlpha exists (it sets the particle's alpha). OK.

Done.