BunnySim – Ecosystem Simulator
Draw a meadow, watch it live
Free · In‑App Purchases
Draw a meadow. Watch it live!
BunnySim is a pixel ecosystem you watch more than you play.
You shape the land and feed the loop. The animals do the rest. Nothing is scripted and nothing is on rails — every chase you see is the same handful of rules colliding with the map you drew. Each run starts from a fresh seed, so the same meadow never plays out twice. A boom, a crash and a recovery can all happen while you wait for a bus.
DRAW THE LAND WITH YOUR FINGER
Paint a river across the grass and it becomes a real wall: nothing walks on it, nothing spawns on it, and every animal routes around it. Plant bushes for cover, erase water back to grass, and save a map you like to play it again.
CARROTS ARE THE WHOLE ECONOMY
Rabbits notice a carrot the moment it enters their perception circle and hurry toward it. Carrots keep sprouting, so the meadow always has a reason to move. A rabbit that eats enough of them climbs a tier.
FOXES THAT ACTUALLY HUNT
A fox sees further than a rabbit but turns slower, so it wins by ambush and by cornering. Go too long without a catch and it starves. Apex foxes stop to scent the air and follow a trail along the ground.
THREE TIERS, TWO APEX STRAINS
Eat enough carrots and a rabbit turns golden, sees wider and leaps rivers. Catch enough rabbits and a fox turns deep red. At the top each species splits into two named apex strains that play completely differently — eight animals in all.
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 afterwards.
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.
SANDBOX MODE
Turn off the clock and the scoring and just build. Place what you want, watch what happens, and stop when you feel like it.
TUNE THE RULES
Open the parameters screen and change hunger rates, breeding speed, perception range, carrot growth and more. Save your favourite setups as presets, or load one of the built-in ones and see the same meadow behave like a different game.
LEADERBOARD, IF YOU WANT ONE
Signing in is optional and the whole game works without it. Sign in with Apple or Google and you get a nickname, a profile picture and a place on the global longest-run board.
COMFORT AND CONTROL
Play in portrait or landscape, with an optional rotation lock. Blood stains left by a catch can be switched off in Settings. The game speaks 18 languages and always starts in English until you pick one yourself.
Free to play with ads between runs. One optional in-app purchase removes advertising permanently — a one-time payment, not a subscription, tied to the account you sign in with, so it restores on a new device.
No accounts required. No timers. No energy bars. Just a small meadow, a few hard rules, and whatever happens next.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
New animal: Hati, the snow wolf. It arrives with the snow and hunts small foxes.
Weather now changes on its own: rain, wind, storm, fog and snow. You can clear the sky from the Environment menu.
Rainbows after the rain.
Fox fights are now real duels.
DNA Lab has a new guide page.
Smoother main menu scrolling, with a fresh look.
The developer, Olgun Aldemir, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location
- Identifiers
- Usage Data
- Diagnostics
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Contact Info
- User Content
- Identifiers
- Usage Data
- Diagnostics
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Olgun Aldemir
- Size
- 53.2 MB
- Category
- Simulation
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- Frequent
Cartoon or Fantasy Violence
Contests
Contains
Advertising
User-Generated Content
- In-App Purchases
Yes
- Remove Ads Forever $1.99
- Copyright
- © 2026 Olgun Aldemir