That was fun. I love how the AI is both very simple but also creates interesting group movements (especially in "zombie modes"). Cosmetic enhancement: the ground plane looks really blurry half-way to the horizon. I can even see it in the README screenshot :D Looks to me like a textbook use case for anisotropic filtering, which should be a simple setting in the library you're using: https://en.wikipedia.org/wiki/Anisotropic_filtering

Or if you're feeling hardcore, write a shader for the ground plane: https://iquilezles.org/articles/filterableprocedurals