Watch life adapt to the world you design

A real simulation, not just an animation

Genes you can inspect

Speed, vision, body size, metabolism, diet, caution and ideal temperature are inherited and mutate. Click any creature to see its genome, lineage and why it acts as it does.

Ecosystems with trade-offs

Speed costs energy, big bodies need more food, sharp eyes cost upkeep. No trait wins everywhere, so the environment decides what spreads.

Experiment and compare

Adjust food regrowth, temperature, seasons, movement cost and mutation live. Every change is logged next to population and gene charts.

Reproducible and shareable

Worlds come from a seed, so a share link recreates the same starting conditions for friends, classes or your own A/B experiments.

How it works

1. Sense and decide

   Each tick, creatures check nearby food and danger and choose an action by priority: flee, hunt, eat, find a mate or rest.

2. Spend and gain energy

   Living, moving and sensing cost energy; eating plants or prey restores it. Run out and the creature dies.

3. Inherit and mutate

   With enough energy, creatures breed. Offspring inherit their parents' genes with random mutations — selection does the rest.

Seven ready-made experiments

Start from a calm garden, isolated islands, harsh scarcity, predators and prey, changing seasons, a mutation storm or sexual reproduction.

Garden of Plenty

Even food everywhere. A calm baseline to learn how energy, breeding and mutation interact.

Islands

Rich food islands separated by barren water. Will isolated groups drift apart?

Scarcity

Food is rare and moving is expensive. Every trait has to pay for itself.

Predators & Prey

Hunters stalk grazers. Watch population cycles and an arms race between speed and caution.

Seasons

Warm- and cold-adapted groups face a yearly temperature swing and a north–south gradient.

Mutation Storm

Very high mutation. Diversity explodes — but can selection keep up?

Frequently asked questions