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Swarm
Reflex
About Swarm
Swarm is a bullet-heaven where you are the horde rather than the hero. You steer a living swarm of creatures with the mouse; they eat what they touch and grow as they feed. Upgrades change the swarm's shape, behaviour and biology - never its weapons - so a run ends up looking like the choices you made. A full run is about twelve minutes and ends at the Hive.
- Controls
- Move the mouse to steer · hold click or Space to cast · 1-5 to pick a mutation
- Shelf
- Reflex
- Typical session
- 14 minutes
- Added
- 2026-09-16
Common questions
What do I actually control?
A target point. The swarm flocks toward it; you steer the mass, not an individual.
What does casting do?
Hold click or Space and the swarm surges outward in its current formation, then regroups.
How long is a run?
Around twelve minutes, ending in the Hive boss fight.
Do upgrades give me weapons?
No. They change spacing, hunger, speed and biology, so the swarm itself becomes the weapon.