Shutshimi

Shütshimi is a random shoot'em up about a muscle-bound fish with memory problems who defends the seven seas. Armed with your trusty shotgun, you'll defeat or navigate through waves of enemies and collect powerups as you make your way through each of the game's bosses. But there's a catch (there's always a catch): you've been cursed with an incredibly short attention span. The battle waves and upgrade cycles only last 10 seconds each, so you'll have to act fast!