Although its been a while, ksp linux was the fist to have 64bit support compared to the windows version. If you haven’t heard of ksp it’s space program/ spaceflight simulator grounden in real world physics/rocket technology with a few caveats. Without mods, the planets are “on rails” and don’t change orbits, and you are only affected by one “gravity source” at a time. The system it takes place in is about 1/10th scale
The companies don’t care if they have legal grounds. The threat of legal fees are enough to make most places comply