Welcome to The Gem Jam, a weekly game jam focused on creativity, discovery, and building great games together.
Whether you're a first-time developer or an experienced creator, everyone is welcome.
Starts: Friday, 12:01 AM
Ends: Sunday, 11:59 PM
A new theme is announced at the beginning of every jam.
After submissions close, games become available to discover through Gemion throughout the following week.
Theme will be revealed at start of game jam.
Bonus theme will also be revealed then.
Gemion is a discovery platform, not a hosting platform. Your game remains on itch.io while players discover it through Gemion.
Each game is rated from 1–10 in the following categories:
Your final score is the average of these categories.
Every week includes a hidden bonus challenge.
Complete it creatively to earn +1 bonus point.
The Bonus Gem is completely optional—but it's a fun way to make your game stand out.
Once the jam ends, head to Gemion to explore every submission.
Play games, save your favorites, and help uncover the hidden gems of the week.
Good luck, have fun, and we'll see you at The Gem Jam!