A scientist slips on a banana peel, and a radioactive capsule rolls down the drain. It ends up in an aquarium, where a fish swallows it. Inside that fish lives a parasite — you. Tiny, and very hungry.
One rule: eat anything smaller than you and grow. Grow big enough to eat the level's goal and the creature evolves right before your eyes. Parasite, mutant, crawler, chimera… nine stages, each one less like anything on Earth. Every evolution drops a new look.
The only way is down: the fish's stomach, its body, the sewer, a settling tank, a pond, a harbour, the deep sea, bedrock and the Earth's core. Each level has its own rules: blood flow and currents, acid and slime, diving herons, nets, darkness where light is bait, stone to gnaw through.
Bosses guard the way: a grease plug, a microbe colony, a giant pike, a warship, a nuclear submarine, a tunnel boring machine and the living core of the planet.
Finish fast to earn stars. How it all ends, fans of the first game already know.
How to play
CONTROLS
Steer the creature with the mouse cursor or your finger — it swims towards the pointer.
DASH
Right mouse button or the on-screen button at the bottom right. A burst of speed that costs mass: cheap for escaping, expensive for chasing. A dash also shakes off anything that has latched onto you.
GOAL
Eat anything smaller than you. The bar shows how much you still need to grow to reach the level's goal. Grow enough, eat the goal, and the creature evolves.
DANGERS
Anything bigger eats you. Acid burns, slime drags and hurts, currents carry you off, nets haul you up. A red sign over a predator means it is about to strike — time to dash.
BOSSES
A big goal cannot be swallowed whole: gnaw through it layer by layer while dodging its attacks.
Pause — the button at the top right. Finished levels stay unlocked.