Fire the cannon, ride the recoil, dock your raft in a stormy harbour
In this game, your raft has a cannon but no oars. To move it, you fire the cannon.
Tap the stormy harbour water to fire. The recoil shoves the raft the opposite way, so you steer by blasting away from where you want to go. Want to drift left? Fire to the right. Need to edge forward? Aim behind you. Each shot is a small push. Get the angle right and the raft glides where you meant it to. Get it wrong and you're the one dodging the cannonball's consequences.
Each level sets you a course across the water. Touch every buoy on the way. On later levels the buoys have to be reached in order, so you have to plan your route as well as aim. Rocks block the obvious paths, and currents keep pulling the raft off course, so every shot has to account for where the water is taking you.
When you've touched every buoy, drift into the docking circle to finish the level. Watch your powder, though. Your cannon only has so many shots, and if the powder runs out before you dock, the raft is left adrift. Careful, deliberate shots get you home. Wild blasting usually doesn't.
There are 15 levels to work through. The early ones teach you how the recoil feels, and the later ones ask for precise, well-planned manoeuvres through tighter water. Take aim, mind the currents and bring your raft safely to the dock.