Web3 Hackathons and Competitions
Upcoming blockchain hackathons and developer competitions. Compete for prizes, build with cutting-edge protocols, and connect with the Web3 community.
avalanche
Avalanche "Many Chains, United as One" Hack House
Avalanche
Online Jul 10, 2024 - Jul 11, 2024
other
avalanche
cross-chain
other
avalanche
cross-chain
$4.0K
$4.0KEnded
Intersect: the onchain Makeathon + Hackathon adventure
intersect
Online Jul 29, 2024 - Sep 19, 2024
other
avalanche
chainlink
other
avalanche
chainlink
$100.0K
$100.0KEnded
Seedify AI JAM
Seedify
Online Jul 11, 2024 - Jul 31, 2024
other
ethereum
solana
other
ethereum
solana
$500.0K
$500.0KEnded
Aleph Hackathon
Aleph Hackathon
Concepción Live, Concepción Arenal 2989 Aug 22, 2024 - Aug 25, 2024
other
ethereum
solana
other
ethereum
solana
$100.0K
$100.0KEnded
Reactive Hackathon - Hacking the Next Generation of Smart Contracts
Reactive Network
Online Sep 9, 2024 - Nov 4, 2024
other
ethereum
avalanche
other
ethereum
avalanche
$50.0K
$50.0KEnded
Taipei Blockchain Week 2024 - Hackathon
Taipei Blockchain Week
Online Nov 14, 2024 - Dec 14, 2024
bitcoin
other
ethereum
bitcoin
other
ethereum
$200.0K
$200.0KEnded
Avalanche | NeuraNode Game Jam
LaunchLoop
Online Nov 14, 2024 - Mar 3, 2025
other
avalanche
gamefi
other
avalanche
gamefi
$19.0K
$19.0KEnded
CAPTCHA Game Challenge
The University of Manchester AI and Business Society
Online Nov 1, 2024 - Nov 18, 2024
other
polygon
avalanche
other
polygon
avalanche
£1.3K
£1.3K258 days left
NERD Network: ETHDenver
DeSciWorld
Online Feb 23, 2025 - Mar 2, 2025
other
ethereum
base
other
ethereum
base
Non-cash Prize
Non-cash PrizeEnded
Circle Developer Bounties - Group 1
Circle
Online Jun 1, 2025 - Sep 1, 2025
other
ethereum
arbitrum
other
ethereum
arbitrum
$20.0K
$20.0KEnded
Global AI Conference & Hackathon · Tokyo 2025 / グローバルAIカンファレンス & ハッカソン｜東京 2025
TinTinLand
J. F. Oberlin University Shinjuku Campus, 3-chōme-23-1 Hyakuninchō, Shinjuku City, Tokyo 169-0073, Japan Jun 6, 2025 - Jun 8, 2025
other
avalanche
polkadot
other
avalanche
polkadot
$803.1K
$803.1KEnded
ZetaChain X Google Cloud AI Buildathon
ZetaChain
Online Aug 2, 2025 - Aug 31, 2025
bitcoin
other
solana
bitcoin
other
solana
$9.0K
$9.0KEnded
bitsCrunch x AI Builders Hack 2025
bitsCrunch
Online Jul 7, 2025 - Aug 4, 2025
other
ethereum
solana
other
ethereum
solana
$5.0K
$5.0KEnded
UK AI Agent Hackathon Ep2 | The Largest Web3 x AI Hackathon in Europe
Imperial Blockchain
Online Aug 2, 2025 - Aug 23, 2025
other
solana
avalanche
other
solana
avalanche
$22.5K
$22.5KEnded
BUIDL with REACT: Fast-track to mainnet
Reactive Network
Online Sep 1, 2025 - Sep 30, 2025
other
ethereum
arbitrum
other
ethereum
arbitrum
$50.0K
$50.0KEnded
DomainFi Challenge
Doma
Online Aug 8, 2025 - Oct 4, 2025
other
ethereum
solana
other
ethereum
solana
$1.0M
$1.0MEnded
The DeFiTimeZ Multichain Mayhem – Code across chains, break all limits
DeFiTimeZ
Online Sep 1, 2025 - Sep 30, 2025
other
ethereum
solana
other
ethereum
solana
Non-cash Prize
Non-cash PrizeEnded
Avalanche GameLoop: High Score!
LaunchLoop
Online Aug 31, 2025 - Oct 9, 2025
other
avalanche
gamefi
other
avalanche
gamefi
$30.0K
$30.0KEnded
Reactive Bounties 2.0
Reactive Network
Online Nov 16, 2025 - Jan 5, 2026
other
ethereum
arbitrum
other
ethereum
arbitrum
REA6.0K
REA6.0KEnded
Liquify Indexer API Hackathon: $100,000 Total Prize Pool
Liquify
Online Jan 21, 2026 - Jun 14, 2026
other
ethereum
arbitrum
other
ethereum
arbitrum
$15.0K
$15.0K102 days left