Draw loops in the sand to claim the beach before the big wave. Only coral holds your sand in place.
Drag to steer your crab (or WASD). Leave your sand to draw a trail, come back to close the loop and claim it all.
Your trail is fragile. If a bot crab crosses it, or you cross it yourself, you lose one of three shells.
Waves wash away pale sand. Only sand near coral you own (and your nest) survives.
In trouble? Tap HOME once per round to dash back to your nest.