[orthecreedence]

> I mean how are those languages good from a software engineering point of view?

Common lisp: great for game programming or any type of application where it takes a while to build up a set of "state." You can redefine various aspects of the program while it's running. So, ok, there was a bug in your physics code and your player fell through the map. You can fix the physics bug while the game is still running and place your player back in the same spot. Now you don't have to recompile and try to get your game in the state it was in before.

When I get back into game programming, I'm probably going to use CL extensively. I might delegate the low-level stuff to an embeddable game engine (like Orx) but all my high-level logic would be CL.