Puzzles Backed by Real ETH, Not Promises

Create Nurikabe puzzles as NFTs, back them with ETH bounties, challenge others to solve them. Pure skill, real stakes.

How It Works

Step 1

Build

Design a Nurikabe puzzle and mint it as an on-chain NFT.

Step 2

Wrap

Back your puzzle with ETH to create a challenge bounty.

Step 3

Solve

Challenge wrapped puzzles. Solve it under the time limit to become its new owner.

Asset-backed, not speculative

Every wrapped puzzle holds real ETH. No game-specific token that inflates to zero. Your asset's value is the ETH inside it.

Skill-to-earn, not grind-to-earn

No RNG loot, no daily quests, no time-gated rewards. Solve the puzzle or don't. Pure logic determines outcomes.

Non-inflationary economy

Challenge fees grow the bounty pool. No token emissions, no yield farming dilution. Each failed challenge adds 9% to the prize.

True on-chain ownership

Puzzles are ERC-721 NFTs. Bounties are ERC-1155 wrapper tokens. Trade them, transfer them, or unwrap your ETH anytime.

Challenger pays	10% of wrapped value
90% of fee	Added to bounty
10% of fee	Platform
Outcome	Fail = bounty grows. Solve = you become the new owner.

Ready to test your logic?