This is just a curiosity question. I've started developing with AndEngine a 2d openGL game engine and I was wondering which engines the big sw houses are using to develop a game.
Thank you very much.
Unity3d is being used by a lot of of professional developers and software houses. It is very popular because of its simplicity and many consider it the best engine among those that cost less than a million dollars.
Those developing popular high level games use purchased/custom developed engines, many of which are pretty expensive.
Unreal Engine is another example.
Here is a list: http://www.xing.com/net/androids/android-game-engines-engines-list-553242/android-game-engines-engines-list-29951892/