CoinTreasure.io...
1. Deposit amount of your treasure value. Go to Dashboard > Deposit
2. Choose coin and map size and hide treasure on the map.
3. Players can discovery only half fields of your map! Cost of discovering fields on your map = value of your treasure.
4. If they don't find your treasure, you will get back your deposit + Players fields deposit with the same value. You treasure will grow 2x..
Hide treasure Deposit treasure