Drag left or right, or use the arrow keys or A and D, to steer your swarm of dots through the gate you want. Multiplier gates grow the swarm and minus gates shrink it. Dodge the saws and crush each boss with a bigger crowd than its health. The run ends when your swarm is gone.
Swarmrush is free, with no ads. The pass is cosmetic and never changes your score.
After paying you get a key. Paste it here once; this device remembers it.