PEPASUR FLOW
Pepasur is an on-chain multiplayer Mafia game on Flow EVM, offering addictive gameplay, real rewards, and seamless blockchain interaction for a truly engaging Web3 gaming experience.
视频
描述
Pepasur
An On-Chain Mafia Game Powered by Flow Blockchain
Built for Flow Hackathon 2025
Overview
Pepasur is a fully on-chain, multiplayer Mafia-style social deduction game deployed on the Flow EVM. Players take on mythological roles: ASUR (Mafia), DEV (Doctor), MANAV (Villager), and RISHI (Detective). They compete through staking, commit-reveal cryptography, and real-time multiplayer gameplay.
Each match requires players to stake FLOW tokens, creating real economic incentives for fair play and strategy. Winners are automatically rewarded via smart contracts, while eliminated players receive partial refunds based on game outcomes.
The game combines pixel-art visuals, Socket.io-based multiplayer, and Flow’s scalable EVM infrastructure to deliver a smooth, decentralized gaming experience.
Core Features
On-chain Mafia gameplay powered by Flow EVM smart contracts
Real economic incentives through token staking and automated rewards
Commit-reveal cryptography for fair and tamper-proof role assignment
Real-time multiplayer using Socket.io and WebSockets
Transparent, verifiable on-chain rewards
Cross-platform support across desktop and mobile
Retro pixel-art UI with modern Web3 integration
Technical Stack
Blockchain: Flow EVM Testnet
Smart Contracts: Solidity (PepAsur.sol)
Backend: Node.js, Express.js, Socket.io
Frontend: Next.js, React, TypeScript
Wallet Integration: RainbowKit, Wagmi (MetaMask, WalletConnect)
Game Logic: Commit-reveal cryptography, ECDSA signatures, server-signed settlements
Smart Contract Architecture
Core Contract: PepAsur.sol
Game creation with customizable stake amounts
Player joining through FLOW token staking
Role assignment using commit-reveal cryptography
Server-signed settlements for reward distribution
Secure withdrawal mechanism for player rewards
Reward Distribution Logic
Mafia Wins: Mafia players receive the remaining staked pool
Non-Mafia Wins:
Eliminated Non-Mafia: Receive 1.75x their stake
Survivors: Share the remaining pool
House Cut: 2% platform maintenance fee
Example
4-Player Game | 0.1 FLOW Stake Each
Total Pool: 0.4 FLOW
House Cut: 0.02 FLOW
Remaining Pool: 0.38 FLOW
Case 1: Mafia Wins
Mafia Players: Share 0.38 FLOW equally
Non-Mafia: Receive 0 FLOW
Case 2: Non-Mafia Wins
Dead Non-Mafia: 0.175 FLOW each (1.75x stake)
Survivors: Share remaining 0.03 FLOW (0.015 FLOW each)
Flow Network Configuration
Flow EVM Testnet
Chain ID: 545
RPC URL: https://testnet.evm.nodes.onflow.org
Block Explorer: https://evm-testnet.flowscan.io
Symbol: FLOW
Security Features
Server-signed settlements to prevent tampering
Player-controlled withdrawals for transparency
Full on-chain transaction visibility
Commit-reveal system ensuring fair and random role assignment
Development Status
In Progress
Multiplayer synchronization optimization
UI performance and animation enhancements
Integration testing for smart contracts and backend
Completed
Migration from Aptos Move to Solidity
ECDSA-based commit-reveal system
Flow RPC and MetaMask integration
Room creation and joining logic
Reward distribution contract testing
Upcoming Improvements
Mobile UI refinement
Advanced analytics for player performance
Game performance optimization for low-latency users
Quick Start
Requirements
Node.js v18 or higher
MetaMask or any EVM-compatible wallet
FLOW tokens on Flow EVM Testnet
Steps
Connect wallet to Flow EVM Testnet
Create or join a game room (0.1 FLOW stake per player)
Play through night, day, and task phases
Check game results and claim rewards directly on-chain
Hackathon Submission
Track: Gaming and Entertainment
Blockchain: Flow EVM
Innovation: On-chain social deduction game with staking-based incentives
Impact: Showcases Flow’s scalability and real-time capabilities for Web3 gaming
Team
Mouli Chakraborty – Project Lead and Developer
Jishnu Baruah – CTO
本次黑客松进展
During the hackathon, the team successfully built and deployed Pepasur on the Flow EVM Testnet, focusing on ensuring seamless smart contract functionality, backend compatibility, and frontend integration within the Flow ecosystem. Smart Contract Development Designed and implemented the complete Pepasur.sol smart contract using Solidity. Integrated EIP-712-based ECDSA signature verification for secure player interactions. Deployed and rigorously tested the contract on the Flow EVM Testnet to ensure stable gameplay logic and reward distribution. Backend Integration Developed a modular backend architecture using Node.js, Express, and ethers.js. Implemented secure transaction signing, event handling, and state synchronization with Flow EVM nodes. Verified all contract calls, player settlements, and reward events across multiple sessions. Frontend Implementation Built a responsive and interactive frontend using Next.js, React, and TypeScript. Integrated wagmi and RainbowKit for seamless EVM wallet connectivity. Created custom React hooks to manage contract interactions, player state, and real-time updates. Testing and Deployment Conducted extensive unit and integration testing across smart contracts and backend APIs. Developed automated deployment scripts for consistent Flow EVM releases. Ensured system stability, low-latency communication, and smooth user experience across all modules. Pepasur now runs fully on the Flow EVM Testnet, demonstrating a complete, on-chain gaming experience built for performance, transparency, and scalability.
技术栈
融资状态
We are seeking funding to scale and launch Pepasur natively on the Flow network. Designed as a “killer dApp” within the Flow ecosystem, Pepasur delivers a highly engaging and competitive on-chain gaming experience that leverages Flow’s scalability, low fees, and developer-friendly infrastructure. The game’s staking model, transparent smart contract logic, and real-time multiplayer experience make it an ideal showcase of Flow’s capabilities for Web3 gaming. With the right funding, we plan to enhance gameplay mechanics, optimize performance, expand our player base, and establish Pepasur as one of the most engaging and community-driven games built entirely on Flow EVM.