Developer Builds Card Combat Game in 72 Hours Using Claude AI
What Was Built
A developer created a fully functional browser game called SNAPDOWN in 72 hours using Claude AI. The game is a card combat system where each of the four playable classes has distinct mechanics:
- Warriors: Duel with high numbers
- Rangers: Win with low numbers and traps
- Wizards: Hunt for color pairs to unleash 5-damage spell blasts
- Tricksters: Pass bombs around the table and steal cards from opponents' hands
The complete game includes a 6-stage story, AI opponents, animations, and a tutorial system. The entire implementation exists as a single HTML file with no framework dependencies or build steps.
How Claude Was Used
The developer reported several specific capabilities of Claude during development:
- Claude maintained the full game state in context throughout the development process
- It caught bugs introduced by the developer during implementation
- It pushed back when the developer suggested changes that would break existing game logic
- It assisted with writing story dialogue that the developer was satisfied with
- The AI wasn't just used for autocomplete—it actively participated in the development workflow
The developer described the approach as "vibe coding"—working iteratively with the AI to build a complete game from concept to implementation.
Technical Implementation
The game is built as a pure HTML/JavaScript application with no external dependencies. This approach eliminates build steps and framework complexity, making the entire game contained in one file that can run directly in any modern browser.
The game is available for free on itch.io at snapdown.itch.io/snapdown.
📖 Read the full source: r/ClaudeAI
👀 See Also
Claude Managed Agents Released: Multi-Agent Orchestration and 70 Days of Practical Lessons
Anthropic launched Managed Agents for multi-agent orchestration and enhanced toolchains. A developer shares 70 days of experience using role-split agents (Opus decision layer, OpenCode engineer, research agents) and the critical shift from 'execute this' briefs to 'you can question my premise' briefs.
Readigo: iOS App Uses Claude as AI Reading Coach for Kids
A developer built Readigo, an iOS app where children read stories to an AI dragon character. Claude analyzes speech-to-text transcripts to score reading accuracy, fluency, pacing, and clarity, then generates age-appropriate feedback.
Local Multi-Agent AI Setup on WSL Using OpenClaw and Ollama
A developer shares their architecture for running a multi-agent AI system on WSL Ubuntu 24.04 using OpenClaw as a gateway, with four specialized agents including one running locally on Ollama for zero API costs.
Claude Skill File Applies Negotiation Theory to Email Composition
A developer created a SKILL.md file for Claude that injects negotiation frameworks like BATNA, anchoring, and reciprocity into email writing. The skill generates 2-3 variant emails with tradeoff analysis instead of a single generic response.