4.1
18.3K reviews
1M+
Downloads
Teacher Approved
Content rating
Everyone
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About this game

Use joints, bones and muscles to build creatures that are only limited by your imagination. Watch how the combination of a neural network and a genetic algorithm can enable your creatures to "learn" and improve at their given tasks all on their own.

The tasks include running, jumping and climbing. Can you build the ultimate creature that is good at all of the tasks?

Note: If you experience some lag you might be able to improve the fps by lowering the population size in the start menu.

For more information on how the algorithm works behind the scenes and everything else you might be interested in click on the "?" button in the creature building scene.
Updated on
Oct 3, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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Ratings and reviews

4.2
15.8K reviews
Tab Cell
September 12, 2023
Really cool, but I would love a game mode where the creature not only learns how to use its body, but also over time has its body change in the event the map has a wall, it would evolve, all the while chasing after food which has a hunger meter, and of course, only the survivors go on to pass down the traits, although they only have so much energy, and can only grow so much. I know that might be a lot to ask, but I wanna be able to make a simple worm, and comw back hours layer to see what I get.
133 people found this review helpful
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A Google user
October 5, 2018
I like the game, but it has several flaws, mostly in the fact that sometimes they get into "inch wars" where the only directive is to make it farther and as some don't work as intended they will only go farther than the others and stop, which results in unproductive mutations. Also sometimes the muscles spaz out and go shooting off glitching to the top and because it got the furthest it gets that passed on, eventually it they all glitch, but other than that it's fantastic.
39 people found this review helpful
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Brent Merideth
December 4, 2021
AMAZING game! Fascinating! Exciting! Fun! Needs improvements! This game is wonderful, however it's lacking one or two things. You see, in real life, some creatures can fly and some can swim. I think there should be the option of wings and fins along with sky and water. Of course, the original area (for ground creatures) should be included as well. The other addition is which ways the joints can rotate, as seen in real life with knees and elbows. Other than that, amazing game!
87 people found this review helpful
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Keiwan Donyagard
October 11, 2022
Thanks! You can now select bones and turn them into wings in combination with the new flying task which rewards creatures for not touching the ground and for flying as high as possible.

What’s new

This update addresses the recently discovered security vulnerability in the Unity game engine (CVE-2025-59489).