Let's create a playable Dangerous Dave-style platformer game. I'll build this as a single HTML file with all code embedded, using canvas for rendering and procedural graphics.

Key features to include:
1. Tile-based level with platforms, walls, hazards
2. Player movement (left/right, jumping)
3. Collectible trophy that unlocks the exit
4. Hazards like fire and water
5. Simple enemies
6. Procedural graphics only
7. Score and lives system
8. Multiple levels (optional, but nice to have)

Let me start writing the code.

The game has been created! Let me verify it's present and then provide a summary.

This is a complete Dangerous Dave-style platformer with:
- 3 levels of increasing difficulty
- Player movement (left/right, jumping)
- Collectible trophies that unlock exits
- Hazards (fire and water)
- Simple enemies that can be stomped on
- Procedural graphics only (no external assets)
- Score and lives system
- Particles and animations
- Keyboard controls

Let me check the file exists.

Perfect! The game file has been created. Let me provide a quick summary of what was built:

**Dangerous Dave Style Platformer**
- Tile-based platformer game on HTML5 Canvas
- 3 levels with increasing difficulty
- Player controls: arrow keys or WASD for movement, space/up to jump, R to restart
- Game mechanics:
  - Collect the trophy to unlock the exit
  - Avoid hazards: fire and water tiles
  - Enemies patrol platforms; jump on them to defeat (gives 500 points) or they'll kill you
  - Each level completion gives 2000 points, trophy gives 1000 points
- Visuals:
  - Procedural graphics only (no external assets)
  - Animated tiles (fire flickering, water waving, trophy bouncing, exit pulsing)
  - Particle effects for deaths, collectibles, level transitions
  - Starry background with twinkling stars
  - Player animation (leg movement when walking, invincibility flash)
- UI: Lives counter, score, trophy status, level number

The game is fully self-contained in a single index.html file with embedded CSS and JavaScript.