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Open House Archive

Welcome to the Open House Archive - your central repository for accessing all previous Open House buildathons and projects.

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Builder Highlight

Most Buildathon Won
M

Manobendra Mandal

Kolkata, India
Champion
3
No.1
V

Vivek Sahu

India
Champion
2
No.2
s

simp1e

china
Champion
2
No.3
Most Project Built
H

Hendrix Iphonk

Surabaya, Indonesia
Champion
15
No.1
M

Minh Sơn

Vietnam
Champion
15
No.2
R

Ricky

California
Champion
15
No.3

Project Highlight

Project Highlight

EduBricks

EduBricks is a platform enabling fractional ownership of tokenized real estate, making investments more accessible

Champion

7th Place

Arbitrum X EDU Chain Mini-Hack

Pencil Finance

Bringing $3 Trillion in Student Loans On-Chain

Champion

1st Place

Arbitrum X EDU Chain Mini-Hack

Stylish Course to Stylus Smart Contract Development

A comprehensive course on deploying and interacting with Stylus smart contracts on Arbitrum and EDU Chain, featuring a full-fledged Stylus IDE for seamless deployment and interaction.

Champion

First Prize

Arbitrum X EDU Chain Mini-Hack

VineFinance

Vine Finance is a decentralized, modular revenue strategy protocol.

Champion

Third Prize

Arbitrum X EDU Chain Mini-Hack

Orbital

A next-gen AMM that supports 2, 3, or even 10,000 stablecoins in a single pool, scaling concentrated liquidity into higher dimensions.

+1
Champion

Second prize

Arbitrum Open House India: Online Buildathon

zkArb SDK

zkArb SDK is a developer toolkit that makes building zero-knowledge apps on Arbitrum simple and fast. It provides plug-and-play Circom circuit compilation, proof generation, and ready-to-deploy verifier contracts, so developers can focus on dApps instead of cryptography.

Champion

Honorable Surprise Mention

Arbitrum Open House India: Online Buildathon

Chain Crush

ChainCrush is a Candy Crush-style puzzle game built as a Farcaster mini app, where every move can earn NFTs and crypto rewards. Already in Season 5 with thousands of users, it blends casual gaming with Web3 incentives on Arbitrum.

Tech StackNext, Ethers, Web3, Solidity, Move
Builder
AAnas Aʟɪ
Gaming

flabitrum

Flabitrum is not just another dApp — it’s a playground. We’re bringing back the raw fun of simple, addictive games and mixing it with the power of on-chain rewards. No confusing jargon, no boring dashboards — just instant fun, friendly competition, and provably fair outcomes secured by crypto rails. Whether you’re here to play, stake, or flex your streaks, Flabitrum gives you a reason to come back every day. Every tap, every choice, every move is on-chain — meaning your wins are yours to keep, trade, or show off.

Tech StackReact, Next, Web3, Solidity, Node, Ethers
Builder
HHarsh Shukla
Gaming

StableUPI

A payment solution that lets users pay via stablecoins directly from their crypto wallets, while merchants receive instant INR through UPI, bridging the gap between crypto and everyday payments.

Tech StackNext, Solidity, Web3, Ethers, Node, Express, REST APIs
Builder
Kkaushal desai
SocialFiOtherDeFi

dapps.co

Invest in communities like stocks (think reddit meets pump.fun)

Tech StackReact, Web3, Ethers, Node, Solidity, Python
Builder
MMohit Madan
SocialFiDAO

Orbital

A next-gen AMM that supports 2, 3, or even 10,000 stablecoins in a single pool, scaling concentrated liquidity into higher dimensions.

Tech StackSolidity, Rust, Next, Node
Builder
YYash Agrawal
InfraDeFi

Lobstar

Good project

Tech StackReact, Ethers, Java, Solidity, Node
Builder
MMamun Khan
InfraDAORWA

StreamPay

A Stylus-powered recurring payments protocol on Arbitrum One, enabling automated subscriptions and payouts with Gelato.

Tech StackRust, Web3, Typescript
Builder
VVipul Yadav
InfraDeFi

BookChain

NFT digital book market, self-publishing and selling books.

Tech StackWeb3, Python, Move
Builder
MMinh Sơn
RWAGamingDeFi

ArtChain Gallery

Virtual art exhibition where artists sell NFT paintings.

Tech StackNext, Web3, Python
Builder
MMinh Sơn
DeFiNFTSocialFi

Learn2Earn

Learn online, take quizzes to earn token rewards.

Tech StackVue, Web3, Ethers
Builder
MMinh Sơn
SocialFiAIOther

MusicNFT Hub

A platform for uploading, streaming music, and selling copyrights as NFTs.

Tech StackJava, Go
Builder
MMinh Sơn
SocialFiDeFiNFT

GameFi Runner

Game endless runner có tích hợp NFT skin.

Tech StackNext, Web3, Python, Move
Builder
MMinh Sơn
SocialFiDeFiNFT
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