Looking for a tutorial/game

There was this game I downloaded a while back, it wasn’t in the game engine, otherwise I would have posted in the BGE forum.
This was a tutorial of sorts and it’s probably 2-3 years old. You open the blend file and find small changes made to the UI, etc. It was supposed to teach you about different areas of blender you might not have been aware of by searching for them (I think).
It’s kinda vague, but that’s the best description of it I can remember.