C. Elegans is a species of Nematode that had it's neurons mapped, converted to code, and now to an Android "game".
On My Pet Elegans I added some ways to interface with the simulated worm by giving it food and adding obstacles.
No state is saved, the simulation is reset every time you open the game.

This is based on https://github.com/heyseth/worm-sim, from which I've created a Godot plugin, that is open-sourced (MIT) here:
https://github.com/leparlon/WormBrain
which is what powers the worm, feel free to check it out, use it and contribute to it. The plugin is a work in progress.