Vibe Jam 2026: 1 in 7 multiplayer games shipped with Colyseus
All 48 of them — built in a one-month jam where 90%+ of every line of code had to come from AI.
Endel Dreyer Vibe Jam 2026 is over, and we counted 48 games using Colyseus in the final submission list. That’s roughly 5% of all entries and around 15% of all online multiplayer entries — a great showing for a jam where most of the code had to be written by AI.
What is the Vibe Jam?
Organized by @levelsio with Cursor as this year’s main sponsor, Vibe Jam is a one-month competition where participants must ship a working game with 90%+ of the code written by AI. Submissions have to be free, web-accessible, and playable in the browser — bonus points for native multiplayer. This year’s edition drew 945 submissions across dozens of engines and AI coding tools.
A clear takeaway from this year: the bar is much higher than 2025. Entries are more polished, the multiplayer integrations feel less like proofs-of-concept, and many submissions ship with progression, persistence, and full game loops.
Every Colyseus game in Vibe Jam 2026
All 48 submissions — sorted by likes on each developer’s most-popular video post from the last 30 days, as a rough proxy for community traction at the close of the jam. Entries without a recent video post are alphabetized at the bottom. Click any preview to jump to the source post.
Massive congrats to everyone who shipped — what a lineup of games. Already excited for the next edition, and honestly can’t wait to see how much further AI will have pushed things by then.