every hackathon and contest indexed on callsheet. tap an event to see its projects, campaigns, and raffles.
build a capybara racing game in 14 days. kart, bike, boat, running, whatever moves.
The first hackathon hosted on bags.fm. Predictions on token launches, app ships, and prize outcomes.
Colosseum's flagship Solana hackathon. Ran April 6 to May 11, 2026 with 2,857 submissions. Project directory at arena.colosseum.org/projects/explore.
Pieter Levels' annual AI-assisted game jam sponsored by Cursor and Bolt. 90%+ of code must be AI-generated. Web-only, instantly playable, free-to-play.
open codebases for the Arc ecosystem that expose reusable primitives other builders can fork and build on. run by Arc and Canteen.
Phase 2 of Mantle's Turing Test Hackathon. Human vs. AI across six tracks: trading, alpha, RWA, consumer dapps, devtools, agentic wallets. $100K prize pool.
Colosseum hackathon focused on privacy, cryptography, and cypherpunk principles on Solana. Submissions closed; 1576 projects.
Open-source vibe coding event organized by wavedash and nicoletteduclar. Indefinite duration. Many projects also submitted to vibejam-2026.