Well, in my case I made an asteroid that has to avoid obstacles and dinosaurs in order to impact and extinguish dinosaurs :(. The obstacles are Pterodactyls and Quetzalcoatlus, made in Blender.
[Uploading: Unity 2018.2.18f1 Personal (64bit) - Nivel1.unity - TercerEjercicio - PC, Mac & Linux Standalone_ DX11
And the video 