I believe Space Engine core is developed in C++. However, one can embed Python for scripting - it’s not rare, but I know game developers tend to prefer lighter

I believe Space Engine core is developed in C++. However, one can embed Python for scripting - it’s not rare, but I know game developers tend to prefer lighter languages like Lua. As far as developing games in Python only, it’s certainly doable - there are raw SDL/OpenGL/etc bindings, and some dedicated libraries like PyGame. It’s not a super common choice though.