cyn -trax (shiveringgenius)

Ethiopia

Kiroween

Online

Build something wicked for Kiroween, our annual Halloween-themed hackathon where developers dare to code in dark mode

$100,000 in prizes
Winners announced
4982 participants

Code with Kiro Hackathon

Online

A challenge for developers to explore Kiro, an AI IDE that works alongside you to turn ideas into production code with spec-driven development.

$100,000 in prizes
Winners announced
9971 participants

World’s Largest Hackathon presented by Bolt

Online

Build with AI for a shot at some of the $1M+ in prizes.

$1,037,500 in prizes
Winners announced
128426 participants

Hack Reddit 2025

Online

Create a new game or experience for the Reddit community!

$36,000 in prizes
Winners announced
1744 participants