Comment by t-writescode

> 3D game is another beast altogether and linear algebra needs to be very solid for that.

Or you can use an engine, like Unity.

Edit: you responded and then deleted a post about "games that don't look like Unity on Unity". Ignoring that the looks of a game usually matter less in the long run than gameplay, a very, very short search shows that Escape from Tarkov[0] is made in Unity.

https://en.wikipedia.org/wiki/Escape_from_Tarkov