Colosseum runs crypto's largest online hackathon. Its flagship — once the Solana-only Frontier hackathon, now the multi-chain Crypto World's Fair — pairs a month-long build sprint with a shot at a $250K accelerator seat. The always-open Eternal track fills the gaps between flagships.
Colosseum's flagship, rebranded from the Solana-only Frontier hackathon into a multi-chain competition with dedicated prize tracks per ecosystem. Recent editions drew thousands of builders worldwide; top teams earn non-dilutive cash and an invite to Colosseum's accelerator.
Between flagship hackathons you can start a self-paced 4-week build sprint whenever you're ready. Currently paused while Crypto World's Fair runs (Sep 14 – Oct 12) and reopens afterward. Every submission is eligible for the accelerator, and the recurring Eternal Award — $25,000 in non-dilutive stablecoins — goes to a standout project twice a year.
Colosseum has rebranded its flagship hackathon. The event that ran as the Solana Radar, Renaissance and Frontier hackathons is now Crypto World's Fair: a fully online, month-long startup competition open to builders on every major chain, with dedicated prize tracks for individual ecosystems. Solana still has a track — it's just no longer the whole event.
Millions in non-dilutive cash prizes spread across the per-ecosystem tracks (full per-track breakdown not yet published).
Select winners are invited to Colosseum's San Francisco accelerator with $250,000 in pre-seed capital from Colosseum's $60M Fund I. Joining is optional.
For scale: the Spring 2026 Frontier hackathon carried roughly $2.75M in combined prizes and investment.
Who can enter
New startups that haven't raised significant outside capital.
Global, and open to every blockchain ecosystem — not Solana-only anymore.
Solo founders welcome; non-technical founders too (AI coding tools are explicitly fine).
One product per builder, and each builder can be on only one team.
You may start building before Sep 14, but only work done inside the window counts. Pre-existing code is allowed if you disclose it — misrepresentation means disqualification.
What you submit
Product name and description
Blockchains and tools you integrated
Team member backgrounds and location
Product logo or graphic
Public GitHub repo (private is OK if you grant access to hackathon@colosseum.com)
2–3 minute presentation / pitch video
Product demo video (3 minutes max)
Go-to-market, demand validation, and distribution plan
How you're judged
Every submission is scored across seven dimensions. Shortlisted teams then defend the project in a 15-minute Zoom interview with judges.
