Krill Keeper
Raise a swarm of krill in your deep-sea tank
A single krill hatches in your tank. Feed it, clean the water, and keep it alive — as you care for your krill they gain experience, level up, and new eggs hatch.
Available for iOS and Android.
Feed and clean
Keep your krill healthy by feeding them and cleaning the water. Neglect them for too long and they die — a gentle notification reminds you when they need attention.
Hatch and collect
Level up to hatch new eggs. Some krill are rare — unlocked through milestones, random chance, or conditions you will have to discover on your own.
Boid flocking simulation
No canned animations. Each krill reacts to its neighbors in real time — aligning, grouping, splitting apart. Every swarm is unique, and it is mesmerizing to just watch.
Deep-sea ambience
An ambient deep-sea soundtrack plays as your swarm drifts.