Originally Posted by bjon045 
The 2D in the infinity engine was very very expensive. The only asset reuse comes when you reuse entire maps i.e. the interior of buildings. With 3D and 2D tiles you generate content far faster and not only that, the content you generate also has attributes that can handle things like collision detection etc. That was all done manually in the IE.
Yes the usual excuses as I said. I know one thing I'm getting sick and tired of the unreal engine in the majority of new games.