I find it helpful if you choose to stay away from reviews and suggestions because more often than not, they are always wrong.
I can't really think of one out of the top of my head, but any game that would be glitchy, have poor animation and controls and just look unfinished.
I don't think there is a worst game. There are many I haven't played and so I won't claim they are the best. What might be your favorite game could be someone else's worst game. Not because the game is bad but it's not their favorite theme.