Five by five of open water, three ships to hide (3 · 2 · 2), and a rival that hunts anything that answers its sonar. Sink the enemy fleet before it sinks yours — win with as many hull cells still floating as you can.
Tap cells to set ships · Rotate (R) · Undo (U)
Then tap the enemy waters to fire a coordinate.
Arrow keys aim · Enter fires · the board is all you get.