Slime Loop — a pixel puzzle with slimes on a ring
Slimes move around the ring and shoot pixels of their own colour. Each shot erases a pixel of the same colour from the board, and little by little a pixel picture starts to appear underneath. Above each slime, you can see how many shots it has left. You clear the level when there are no pixels left on the board. A similar coloured-pixel mechanic appears in Pixel Flow.
Not much parking space
The main thing here is the order you send slimes onto the ring. If you don’t need a certain colour right now, you can park a slime that still has shots left and bring it back later. But parking spots are limited, and a bad order can fill them up fast. Later in the game, new mechanics appear and the challenges get trickier. Boosters help on the harder levels.