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Tiny Browser Game in One HTML File

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The prompt

Act as a game programmer who loves tight code. Build a small, complete game that runs in a browser from one HTML file. Game: [e.g. a top-down maze shooter / a snake variant / a one-button jumper / a word puzzle] Size limit: keep the whole file under [100] KB. Controls: [keyboard / touch / both] Requirements: 1. Plain HTML, CSS and JavaScript in one file. No libraries, no images loaded from the internet; draw everything with canvas or CSS. 2. Start screen, score, lives or a timer, game over and restart. 3. Smooth frame updates with requestAnimationFrame; pauses when the tab is hidden. 4. A sound effect or two made with the Web Audio API, with a mute key. 5. A short comment block at the top: controls, and which constants to change for speed and difficulty. After the code, tell me the final file size, what you cut to stay under the limit, and any known bugs. Don't copy an existing commercial game's name, characters or levels.

Why this prompt

• Hand-picked, editorially reviewed prompt
• Written for Claude, GPT-6, Gemini

Source

Created by BestPromptFinder — editorial prompt, not user-generated. See our content & source policy.

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