I'll start by examining the current directory to see what files are present, including phaser.min.js. Then I'll build a self-contained index.html with the game. First, let's list files.

Great, phaser.min.js is present. Now I need to create index.html with a Phaser 3 game. I'll create a side-scrolling platformer with procedurally generated graphics: use canvas drawing for platforms, player, enemies, coins, flag. Also include physics (arcade physics). The game should have a player that can run left/right, jump, stomp enemies (if landing on top), collect coins, and reach a goal flag. Levels will be randomly generated each time.

I'll structure the HTML with a full-screen canvas. Use Phaser's scene system: preload, create, update. Since no external assets, I'll generate textures using Graphics objects and create sprites from them.

Let's write the index.html file. First, I'll create a basic template, then add the game logic. Let's start with writing the file. I'll break it into sections: HTML structure, style, script. Use Phaser from the local file.

I'll write the content now.

Now let's check if the file exists and maybe test it quickly by opening a simple HTTP server? But we can just verify the file is there and maybe run a quick curl to see if it's valid HTML. Let's also ensure phaser.min.js is loaded correctly. We'll check the size of the HTML. Let's also make sure we have no syntax errors. I'll read a snippet of the HTML to ensure it's fine.

I've created a complete, self-contained side-scrolling platformer game in the classic Mario style using the provided Phaser library. The game is all in one `index.html` file with inline CSS and JavaScript.

Key features of the platformer:

1. **Procedurally Generated Graphics**: All visuals are generated at runtime using Phaser's Graphics API:
   - Player character (red with hat)
   - Enemies (purple with eyes)
   - Platforms (brown wooden texture)
   - Coins (gold circular coins)
   - Flag (green pole with red flag)

2. **Classic Mario-Style Gameplay**:
   - Run left/right with arrow keys or WASD
   - Jump with spacebar or up arrow
   - Stomp enemies from above to defeat them - Collect coins for points
   - Reach the flag to complete the level

3. **Game Systems**:
   - Physics-based movement with gravity
   - Enemy AI that bounces back and forth
   - Randomly generated platforms across the level
   - Coin collection system
   - Lives system (3 lives, lose one when hit by enemy)
   - Game over/win conditions

4. **UI Elements**:
   - Coin counter and lives display - Instructions overlay - Game over screen with restart option

5. **Technical Implementation**:
   - Single HTML file with no external dependencies
   - Uses only the provided `phaser.min.js` (no CDN)
   - Fully sandboxed with no network requests
   - Responsive design with centered game container

The game generates a random level with platforms, enemies, and coins placed procedurally. The player must navigate the level, avoid enemies or stomp them from above, collect coins, and reach the flag at the end to win. If you lose all 3 lives, it's game over.

The file is now ready at `/tmp/ws/index.html` and can be opened in any modern web browser.