4.1
18.2K reviews
10L+
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
12 Aug 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
15.7K reviews
Gage Stepek
31 July 2025
2022: Creatures need to be able to set or detect orientation. Also we need to be able to zoom out more, and have more vertical viewing distance. When creating a flying creature you can't see much more than the initial viewing area preventing you from seeing a full flight. Designer needs measurement tools + multi select, arrow tool when bones + joints are near. A drop down menu with different brain suggestions "types". Add the best voted from discord.
53 people found this review helpful
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Tab Cell
12 September 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.
119 people found this review helpful
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A Google user
5 October 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.
31 people found this review helpful
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What's new

- Save recordings of your favourite simulation results in the new gallery.
- Choose skins such as googly eyes, noses, hands, feet and attach them to bones for a more personalized look. Skins are purely cosmetic and do not affect the simulation.
- Added a transform gizmo for scaling and rotating selections.
- Save file performance improvements.
- The camera now also follows the creatures vertically.
- Added a background grid for the flying task.
- Bug fixes and stability improvements.