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.
The GitHub Game Off, our very own game jam, returns next month! Participants will have the entire month of November to build a game based on a secret theme (to…

The GitHub Game Off, our very own game jam, returns next month! Participants will have the entire month of November to build a game based on a secret theme (to be announced later) and share their creations with the world.
Much like previous years, the use of open source engines, libraries, and tools is encouraged, but not a strict requirement. Unlike previous years, however, we’re removing the restrictions! Previously you could only submit web-based games, but now all games are welcome – all platforms, operating systems, and devices.
The theme for this year’s Game Off will be announced here on the GitHub blog on Nov 1st at 13:37 PDT, so please stay tuned.
We’ve seen some great games submitted in previous years. We can’t wait to see what you come up with this year <3
The official Twitter hashtag for the Game Off is #ggo16.
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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.