I'm not talking the usual "Oh, the graphics suck" or "Oh, it's glitchy", I'm talking things that have made a game worse in a way that you really haven't seen anywhere else. It can even be in an otherwise good game.

Warioware DIY has an unskippable tutorial that's 2 hours long before it will let you make your own games or play any of the pre-made games. I've never seen a sandbox game do something like that before.