Bunny Sim
Draw rivers with your finger
Paint water across the grass and it becomes a real wall: nothing walks on it, nothing spawns on it, and pathfinding routes around it. Draw land to take it back.
Pixel ecosystem · Mobile
A meadow that runs itself — and sometimes runs away.
Bunny Sim is a tiny pixel-art ecosystem simulator for mobile. Draw a river, scatter a few carrots, then let go: rabbits forage and panic, foxes hunt and starve, and both species evolve if they live long enough.
- Pixel art
- Portrait play
- Evolving species
- Player-shaped rivers
Tap the meadow to drop a carrot.
What is Bunny Sim?
Bunny Sim is a sandbox predator–prey simulation you watch more than you play. You shape the land and feed the loop; the animals do the rest. Every run starts from a new seed, so the same meadow never plays out twice.
| Genre | Ecosystem / predator–prey simulation, sandbox |
|---|---|
| Platform | Mobile — availability and requirements are listed on each official store |
| Price | See the official store listing for current pricing and optional purchases |
| Controls | Touch-first, portrait play |
| Progress | Run and save features may vary by release |
| Art style | Hand-written pixel art, 8-pixel tiles, fixed palette |
| Session length | Anything from one minute to an hour — it is an idle world |
| Developer | Olgun Aldemir |
Small rules, loud consequences
Nothing in Bunny Sim is scripted. Every chase you see is the same handful of rules colliding with the map you drew.
Carrots are the whole economy
Rabbits notice carrots inside their perception circle and hurry toward them. Carrots keep sprouting, so the meadow always has a reason to move.
Foxes that actually hunt
A fox sees further than a rabbit and turns slower. It wins by ambush and by cornering — and if it goes too long without a catch, it starves.
Two phases of evolution
Eat enough carrots and a rabbit turns chocolate-dark, sees wider and hops faster. Catch enough rabbits and a fox turns deep red — and naps for five seconds after a three-rabbit feast.
A population graph, live
The bottom bar plots rabbits against foxes while you watch. Boom, crash and recovery are visible as they happen, not in a summary screen.
Credits you earn, not buy
Ten carrots eaten gives you one carrot to place. Ten rabbits caught gives you one fox to place. That is the only currency in the game, and it costs nothing.
How to play
Five steps, no tutorial pop-ups.
- Draw the meadow. Use the river brush to cut water through the grass, or the land brush to fill it back in.
- Press start. Rabbits, foxes and carrots spawn on grass only — never in the water you drew.
- Watch the balance tip. Rabbits forage and flee, foxes hunt and starve, and the graph at the bottom keeps score.
- Spend your credits. Drop a carrot to save a starving warren, or drop a fox when rabbits take over.
- Reset for a new seed. Your drawn river stays; everything else starts over.
Privacy, written plainly
Our Privacy Policy explains what each released version may process, why it is needed, and which service providers are involved.
Version-specific disclosure
Data practices are documented for the features and platforms available in each released version.
Purpose and choice
If optional account or cloud features are offered, the policy explains what they use and why before you choose them.
Your controls
You can contact us with privacy questions or requests about access, correction and deletion.
Read the full Privacy Policy and the Terms & Conditions.
Frequently asked questions
Is Bunny Sim free?
Bunny Sim is planned as a free download. Current pricing and any optional purchases are shown on each official store listing.
How does Bunny Sim handle personal data?
Data practices can vary by platform, version and optional features. Read the current Privacy Policy and the privacy disclosure on your official store.
Which platforms are supported?
Bunny Sim is being prepared for mobile. Availability and minimum requirements are listed on each official store page.
How is Bunny Sim played?
It is designed for touch-first portrait play. Draw rivers, start a run and influence the ecosystem with placement credits.
How does evolution work?
A rabbit that eats enough carrots enters phase two: darker fur, wider perception and faster hops. A fox that catches enough rabbits enters its own phase two — a deep red hunter that sees further, survives hunger longer, and falls asleep for five seconds after eating three rabbits within three seconds.
Can I influence the simulation?
Yes, in two ways. Before a run you draw the rivers, which decides where animals can walk. During a run you earn placement credits: ten carrots eaten gives one carrot to place, ten rabbits caught gives one fox to place.
What is the age guidance?
Bunny Sim is intended for a general audience aged 13 and over and uses stylized pixel-art predator-prey action. Review the official store page for the current age rating and content information.
Does the game save my progress?
Each run starts from a fresh seed. Save, account and cloud features may vary by release; check the current in-app information and store notes.