So, I've been wondering whether to make my game true 2d, or 2d with depth like in the old TMNT arcade games. I would have outright picked 2d with depth, as it looks a lot better and expands gameplay, but I'm not too sure how I would perform collision with that (would the box2d shipped with libgdx work? I honestly don't know). I looked at this thread: http://forum.unity3d.com/threads/158842-Side-scroller-with-depth-(TMNT-Double-Dragon
) but there was only 1 reply, "You'll need to decide whether you're doing 2D or 3D. That's more an art decision than a programming one"
There's probably other problems with 2d and depth that I haven't thought of, but any help is appreciated.