SLAPJAM
Slapjam.ai
The world's largest AI game jam
September 29 – 30, 2026 · Online · Free to enter
The jam
Two days. One game. Any AI tool you can get your hands on. Slapjam is an online game jam for people who build with AI: code, art, music, voices, 3D, all of it. Enter solo or as a team, ship a playable browser game to itch.io by the deadline, and let the world play it on their phones.
New to AI game development? Start with our guide to making the best AI game and the step-by-step Godot to itch.io export walkthrough.
Format
- When. September 29 – 30, 2026. Theme and exact start time announced on the itch.io jam page and Discord.
- Mobile portrait. Games must run at a portrait phone resolution, such as 720×1280 or 1080×1920.
- Web export. Export to HTML5 and upload to itch.io so it plays in the browser. No downloads.
- Submit on itch.io. Entries are submitted through the jam page before the deadline.
- AI everything. Use any AI tools you like for code, art, audio and design. Tell us what you used on your submission page.
Prizes
Sponsors
Sponsoring Slapjam puts your tool in front of hundreds of developers during the weekend they are actively choosing what to build with.
Every sponsor also posts about Slapjam four times on their own social media. Full details, or email sponsor@slapjam.ai to become a sponsor.
Make the best AI game
The tools that get a jam game finished: AI coding agents for Godot, Unity and Unreal, music and voice generators, pixel-art and image models, and text-to-3D. Sponsored tools are marked and listed first.
Read the guideExport to itch.io
A short walkthrough for Godot: portrait project settings, the Web export preset, zipping the build and configuring the itch.io page so the game runs on phones.
Read the walkthrough