What I like is it´s stability.
When it behaves unstable, it´s most likely the script, not the engine.
Also I like Lite-C quite much.
Pointers may be annoying, but on the other hand they are very useful and mighty.

Also it´s really flexible. I´ve done simulations (games and serious one´s), applications, procedural stuff, ego-shooters, strategy games, 3d-galleries, screensavers, jadda jadda...

My customers love stability and flexibility.

When you´re used to it, Gamestudio is like a premium swiss knife.

Often simulations are blamed here - but when you imagine on how much little time Gamestudio has spawned games that sell like hell - well, you don´t have to love it, but it should get at least a tiny weeny respect.