The user wants me to build a single-page web app that is a tile-based platformer game in the style of Dangerous Dave. Let me plan this out:

Key features needed:
1. Canvas-based rendering
2. Tile-based level design
3. Player character that can move and jump
4. Hazards (fire, water)
5. Simple enemies
6. Trophy to collect
7. Exit door to reach after collecting trophy
8. Collision detection
9. Procedural graphics (no external assets)

I'll create a complete game with:
- A level map with tiles (platforms, walls, hazards, enemies, trophy, exit)
- Player physics (gravity, jumping, collision)
- Enemy AI (simple patrol behavior)
- Game states (playing, won, died)
- Score tracking
- Procedural pixel art drawn on canvas

Let me write this all in one index.html file with inline CSS and JS.

I'll create a complete Dangerous Dave-style platformer game in a single HTML file. Let me build this with all the required features: player movement, jumping, hazards, enemies, trophy collection, and exit.

The file has been created successfully. Let me verify it exists and check the size.

I've created a complete Dangerous Dave-style platformer game in a single HTML file. Here's what's included: ## Features: - **Player Character**: A procedurally drawn hero with a hat, body, legs, and arms that animate when moving - **Movement**: Arrow keys or WASD to move, Up/W/Space to jump - **Hazards**: - Lava (orange bubbling liquid) - instant death - Water (blue with waves) - instant death if fallen into - Spikes (triangular) - instant death - **Enemies**: Red blob-like creatures that patrol back and forth - stomp them from above or avoid them - **Goal**: Collect the golden trophy first, then reach the exit door - **Game Elements**: - Lives system (3 lives) - Timer - Score tracking (trophy status) - Win/lose states - Restart with R key ## Visuals: - Procedurally drawn tiles (stone blocks, wooden platforms, water with waves, lava with bubbles, spikes) - Animated player with walking leg movement - Bouncing enemies with angry expressions - Trophy with golden shine effect - Exit door that turns green when accessible - Starry night sky background with twinkling stars ## Gameplay: - Navigate the level avoiding hazards - Stomp on enemies to defeat them - Find and grab the trophy - Reach the exit to win - Press R to restart at any time The game runs entirely in the browser with no external dependencies!