Lee Reilly
Senior Program Manager, GitHub Developer Relations. Open source hype man, AI whisperer, hackathon and game jam wrangler. I write && manage programs, support dev communities, and occasionally ship something.
Game Off is an annual game jam (or “hackathon for building games”) that’s a little different from most—it lasts for the entire month of November—not just a weekend or a…
Game Off is an annual game jam (or “hackathon for building games”) that’s a little different from most—it lasts for the entire month of November—not just a weekend or a few days. It’s the perfect excuse to learn a new language, try out a new game engine, or even build your first game!
Team up with your friends, co-workers, or complete strangers—or participate by yourself. Use whatever programming languages, game engines, libraries, and assets you like. We’ll announce the theme on November 1 at 13:37 PT and from there you’ll have 30 days to build something based on said theme.
Last year’s theme was MOONSHOT and that gave rise to hundreds of games like a reimagining of “Un voyage dans la Lune,“ 8-bit lunar racing games, catapulting cats to the moon, interplanetary games of pool, ASCIItastic roguelikes, and all sorts of pixelated puzzle games—all interpreting the theme in their own way and using every language and game engine under the sun moon.
Don’t know where to start? View the website for some great resources. The community forum and the Discord channel are also great places to introduce yourself and ask questions.
Sign up now and be amongst the first to know the theme. Good luck and have fun!
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Out of more than 700 games submitted to Game Off 2025, these ten winners stand out for creativity, craft, and bold interpretations of the WAVES theme. All are free to play, with source code available to explore.
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