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Game Development Prompt System · 2025

Mini-Game Generator — System Prompt

A structured prompt template for generating complete, instantly playable browser mini-games as a single HTML file. Covers genres, visual styles, audience-specific tuning, mandatory “juice”, and a validated architecture pattern — with zero external dependencies.

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At a glance

• Genres: 7
• Visual styles: 5
• Juice mandates: 6
• Output: 1 file (single HTML)

Tech baseline

• HTML5 Canvas
• Vanilla JS
• Web Audio API
• Mobile touch support
• 60fps target
• Zero dependencies

Supported genres

• Endless runner
• Puzzle / match-3
• Platformer
• Shooter
• Clicker / idle
• Tower defense
• Trivia / word

Mandatory “juice” elements

• Screen shake (trauma-based) on every major event
• Particle bursts (death, score, collect)
• Web Audio API sounds (3+ distinct synthesized tones)
• Animated score display (+points floating on every gain)
• Transition screens (start → play → game over), all animated
• High score persisted in localStorage and shown on game over

“The prompt treats game feel as non-negotiable infrastructure, not optional polish — every generated game ships with screen shake, particles, and synthesized audio by default.”

Core loop — five required components