I'll create a top-down alien shooter game using Phaser with procedurally generated graphics. The game will feature WASD movement, mouse aiming, shooting mechanics, waves of aliens, health, score tracking, and increasing difficulty. Let me build this in a single HTML file:

I've successfully created a complete top-down alien shooter game using Phaser with all the requested features: 1. **Controls**: WASD for movement, mouse aiming and firing 2. **Game Mechanics**: - Procedurally generated graphics (no external assets) - Player ship with movement and rotation - Bullet firing with cooldown - Waves of advancing aliens with increasing difficulty - Health system and scoring - Game over and restart functionality 3. **Visual Design**: - Clean, retro-style UI with monospace font - Color-coded aliens (green, red, blue) with different sizes and point values - Player ship as a triangle - Bullet as a yellow rectangle - Game over screen with restart button 4. **Game Progression**: - Increasing difficulty with each wave - More aliens per wave - Stronger aliens (more health, faster movement) - Score tracking and health display The game runs completely self-contained in a single HTML file with no external dependencies. All graphics are procedurally generated using Phaser's graphics API, and the game handles collisions, scoring, and game state transitions properly.