Definitely Mortal Kombat 4 for PS1.The grapichs in MK4 sucks even for PS1 standards.Characters are stupid and the story(if there is one)is lame.Most fighting games are fun but this game is just boring and hard.Compared to Tekken and Street Fighter this game is just weak.I know that many people love this game but I just cant see why.One of the worst games that I have ever played(probably the worst).