I built an open-source 2D game IDE where you just chat with an AI agent
Hi,
I'm not a game developer. I'm a guy who's wanted to make my own games for ~20 years but never had the skills (couldn't draw, hated learning engines). AI changed that for me, so I built the thing I wished existed.
AGF (Agent Game Forge) is a local desktop IDE where you talk to coding agent — Codex CLI or Claude Code — and it builds a 2D game inside your project. Sprites, parallax backgrounds, physics, hazards, pickups, scene layouts. There's a visual editor for drag-tweaking whatever the agent gets wrong, and live reload to play.
What's in the box:
• BYOA + BYOK — bring your own agent and API keys
• Image gen: bring your key, or use Codex's built-in (GPT-Image2)
• Sprite pipeline: chroma-key sprite-sheets, multi-action animation, 4-layer tileable parallax with despill
• Visual scene editor with hitbox overlay decoupled from visuals
• Default output: vanilla JS + Canvas (push to GitHub Pages, it runs)
2 days, 235 commits, ~34k LOC of app code, mostly me + Claude.
Apache 2.0 licensed.
Honest about limits: it's MVP, best at platformer-shaped games right now, and I'm definitely not a pro game dev so I've probably gotten things wrong about how real game devs work. Feedback super welcome.