You have a treasure map, but also your competitors: the treasure will be for the first one that reaches the island. Paddle fast! The pirates play dirty, so they will shoot at you: dodge their shots and answer them the same way. After each race, use your earnings to buy new boats, weapons, candles and other upgrades. In level 1, you run against 2 rivals and have to earn 958 golden coins. Later it will be more difficult!
Arrow keys left/right to row, space bar to shoot (the cannons will always point to the closer enemy). Between races, interact with the mouse to buy upgrades.