Im just curious to see what people think the worst retro games are.

Gonna go as early as PS1 N64 NES SNES games.

Superman 64

Bubsy 3D and Superman 64 are the most notorious known.

Go watch some AVGN

Ghosts'n Goblins for the NES.

I thought people liked that game lol

Shaq Fu is one a lot of people bring up

Lol youre gonna piss a certain someone off with that one.

And I don't understand why, the controls are crap, music is so irritating, the game is ugly and the whole design of the game is just bleh, specially the BS you have to endure in the final level to beat the game. I really don't understand how people can like this game. 

Ghosts 'n Goblins is usually in dicussion due to the fact that the game is widely reputed as the most difficult game of all time. Even serious gamers have difficulty with the game due to it's myriad of brutal enemy spawns, controls, and weapon types you are given.

Fun fact Alternine-San, Ghosts 'n Goblins was actually ported multiple times; the NES being the most infamous (famous for those who love brutal games). It started out as an arcade game: its difficulty as such due to the prominence of arcade cabinets.