Sui Overflow 2025 is the second edition of the flagship global virtual hackathon hosted by the Sui Foundation. The initiative challenged developers to build production-ready decentralized applications leveraging the network's object-centric architecture and advanced features like zkLogin and Walrus. The event attracted massive global participation, receiving 599 submissions from builders across 85 countries. Teams competed across nine distinct tracks for a massive total prize pool of $550,000. The competition culminated in June 2025 with 46 winning teams recognized for their technical excellence and innovation.
The Sui Overflow 2025 hackathon officially launched its application phase in February 2025, inviting builders to develop next-generation dApps on the Sui network. In preparation for the main building phase, organizers hosted the Road to Sui Overflow, a series of comprehensive in-person hacker houses and technical workshops spanning 23 global locations - including Palo Alto, Tokyo, and Bengaluru. Developers were required to ensure all submitted GitHub repositories contained code initialized no earlier than February 5, 2025.
The massive $550,000 prize pool was distributed across nine core technical tracks, such as DeFi, AI, and Programmable Storage. Each main track recognized four top teams, with prizes ranging from a $30,000 grand champion tier down to $7,500 for runners-up. Furthermore, an additional $25,000 was dedicated to the University Award, distributing $2,500 each to 10 distinct student teams. The broader community was also incentivized through a $25,000 Community Favorite Award sponsored by HIPPO, which distributed rewards to voters whose choices closely aligned with the final project winners detailed in the winners announcement.
Register your developer profile or team roster on the official submission portal starting February 12, 2025.
Initialize your project's GitHub repository, ensuring all code is strictly dated after February 5, 2025.
Participate in regional Road to Sui Overflow workshops to refine your technical architecture and team synergy.
Build your production-ready dApp leveraging core Sui primitives like Walrus and zkLogin during the April to May build period.
Submit your final pitch and codebase for evaluation across one of the nine competitive technical tracks.
Review the final cohort of 46 champions via the official recap.