Didn't really know where to put this post but, I am looking for a free game engine that I could use to mess around with, it can either be on the windows or mac platform, I know of the unity engine.... what other ones are there?
As an aside I am also working on a game engine of sorts, though mine is focused on top-down view 2D role-playing games. If you are at all interested in experimenting with it, let me know.