Type any multiplier up to 2000×. Very high speeds run many steps per frame — great for fast evolution, but may tax slower devices.
Save exports your entire world (creatures, genes, lineage, painted terrain & settings) to a file you can reload or share later.
25 safe Seepas vs 100 hunted by a Suuba, split by uncrossable water. Watch their genes diverge.
Scenarios
Free play — no goal. Experiment however you like.
🛟 Help (Intervention Points: 30/40) — click a tool, then click the map
Map View
Changing this rebuilds the world at a new size
Click Action
Terrain Editor
Pick a brush, then drag on the map to paint. Creatures, food & water respond live.
Brush size40
View (Zoom & Pan)
Scroll to zoom, right-drag (or WASD / arrows) to pan, and click the minimap to jump. Press 0 to reset the view.
Climate & Time
Day length48s
Season length12s
Global temperatureNormal
Warmer climates raise thirst and ease the cold; colder climates do the reverse. Shorten the day or season cycles to speed up day/night and the march of the seasons.
Weather Events
Punctuated pressures beyond the seasons. Heatwaves spike thirst; storms pour rain and bring relief; blizzards bury the screen in snow and freeze creatures; tornadoes tear across and fling animals around.
Starting Populations
Seepas0
Suubas8
Siibas14
Sooba (marine)24
Saaba (sea predator)4
Syyba (amphibious)3
Sieba (flying fish-hawk)3
Soopa (burrowing forager)14
Syypha (jellyfish)8
Phyypha (drifting colony)12
Scuuba (scavenger crab)10
Smeeba (tundra lemming)30
Snaava (arctic fox)6
Applied when you press RESET
Inspector
Set Click Action to 🔍 and click a creature to see its stats and genes.
Circles are species (size = population). Arrows point predator → prey and glow when hunting happens. Tap a species to manage it.
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🧪 Natural Selection
Group A — safe (25)Group B — hunted (100)
Group A has no predator (control). Group B is hunted. The vertical axis auto-zooms to the live data range, so even small differences show clearly — watch the red (hunted) line pull above the green.
Gene Evolution
Lines show each gene's average, scaled to its possible range (top = max). Watch traits drift as selection acts.
🦠 Disease
InfectedAvg resistance
Red = how many creatures are sick. Green = average resistance gene. Enable Disease to watch resistance evolve as the illness selects out the vulnerable.
Scuuba (scavenger crab — scuttles land & shore eating corpses, cleaning up the dead)
Smeeba (tundra lemming — cold-loving grazer that breeds in booms; the fox's staple prey)
Snaava (arctic fox — nimble tundra hunter with a seasonal white coat; preys on lemmings & Seepas)
Coral (Marine — fish food)
Mushroom (Swamp) / Lichen berry (Tundra)
🪹 Nest (Seepa-built — helps pairs nearby breed)
🕳️ Burrow (Siiba-built — shelter from the cold)
🪵 Dam (Syyba-built — pools inland freshwater to drink)
How it works
Seepas drink at the sea shore and eat fruit, apples, cactus flowers, pine cones and Siibas
The map has nine biomes — grassland, forest (pines), desert (cacti), wetland, tundra (lichen), taiga (spruce), savanna (acacia), swamp (mushrooms) and a marine sea — each with its own food
The sea has Soobas that graze on coral; Siibas and Suubas catch Soobas at the shore (another link in the food chain)
Only fish can enter the sea — land animals drink at the shore but cannot cross the water
Every species inherits a genome — speed, size, vision and metabolism, plus camouflage (Seepa), ferocity (Suuba) or stealth (Siiba). Genes blend from both parents and mutate each generation, so traits drift under selection. Watch them evolve in the Gene Evolution graph!
In spring, Seepas flock together — they align, group up and keep their distance like a real shoal (toggleable)
Summer brings a heatwave — everything dehydrates faster, so the shoreline becomes precious
Suubas are nocturnal: fierce hunters at night, sluggish and reluctant by day
Siibas hide inside bushes and trees at night where predators can't reach them
In winter creatures slowly freeze — they huddle near bushes and trees to stay warm. Bigger Seepas resist cold better, Suubas have thick hides
Autumn is harvest season — leaves drift down and food grows fast and plentiful, so animals can fatten up
Winter is harsh — snow falls and food becomes scarce (most berries and apples stay barren), so populations are tested
Aging is optional — turn it off and creatures never die of old age (only hunger, thirst, predators and cold)
Migration rescue (optional): a small flock wanders in if a species nearly dies out
🌍 Welcome to the Evolution Simulator
Watch a living world of 13 species hunt, breed, and evolve in real time — with genetics, weather, disease and a full food web. New here? Take a 30-second tour of the controls.