Lua is widely used as a scripting layer on top of a game engine. The intense calculations needed to generate a high-fidelity simulation like graphics and physics are usually implemented in the engine in C++, and then the game logic&#x2F;item behavior&#x2F;etc. is defined in Lua. I haven&#x27;t heard of anyone using pure Lua for a whole game, including the engine. It&#x27;d be really interesting to see what it looked like if someone did so.