Pixel Flow!

Conveyor’s ready, pigs are on standby. Tap to send a pig onto the conveyor so it rains balls onto pixel cubes of its own color. The number above its head is its ammo: that’s how many hits it makes. Run out and it leaves the stage; if not, it slips into one of the 5 waiting slots and, when you tap again, it jumps back on the conveyor to fire another round.
The conveyor has a capacity—push past the limit and you’ll need to wait. Send them in the right order, manage the flow, and hit the cubes to clear the board piece by piece.