GameMarket

What is GameMarket?

GameMarket is an on-chain sports prediction market running on Arbitrum. Anyone can create markets, set odds, and provide liquidity; anyone can participate and win USDC. Funds are held by decentralized contracts and settled by rules — secure and transparent.

An Example

Champions League Final: Real Madrid vs. Manchester City. A community leader creates a market on GameMarket, sets odds for Madrid Win / City Win / Draw, and deposits an initial liquidity pool. Fans connect their wallets, pick an outcome, and place bets in USDC. After the match, the result is submitted, and winners claim their payouts directly from the contract.

Why GameMarket?

Fully On-chain

Every bet, payout, and settlement is recorded on Arbitrum. Transparent and verifiable by anyone.

Non-custodial

Funds are held by the smart contract, not by the creator or the platform. The creator cannot withdraw before settlement.

Open Market Creation

No license needed. Anyone can create a market for any sporting event and earn from the overround.

Multi-layer Settlement Protection

Bond-backed settlement, 24-hour challenge window, dispute arbitration, and 96-hour timeout cancel. See our Security page for details.

How to Bet

  1. Connect your wallet (Arbitrum network)
  2. Browse open markets and pick an event
  3. Click on the odds to add to your bet slip
  4. Enter your USDC amount and place the bet
  5. After the match, claim your winnings if you won

Want to Create a Market?

  1. Go to Create and fill in the event details
  2. Set outcomes and initial odds
  3. Deposit your initial USDC liquidity pool
  4. Monitor bets and adjust odds as needed
  5. Submit the result after the match (bond required)

Safety Guarantees

  • Settlement requires a bond deposit — wrong results cost you real money
  • Anyone can challenge a settlement within 24 hours
  • If no one settles within 96 hours, the market is cancelled and everyone gets a refund
Full details on our Security page →

Risk Disclaimer

GameMarket is an experimental on-chain protocol. Smart contract risk, oracle risk, and market risk exist. Only bet what you can afford to lose. This is not financial advice.