10 Worst Video Game Ports Ever

10. X-Men Vs Street Fighter (PlayStation)

X-Men vs Street Fighter was a real trailblazer, since it's directly responsible for popularising tag-team mechanics in fighting games. 

Rather than throwing in the mechanic as a gimmick, Capcom made sure that swapping characters in and out of battle accentuated the gaming experience. Teammates healed when they weren't being used, so players had to be strategic when to tag them in. Your buddy could be tagged in for a second, which was vital for counters. Also, both combatants could be summoned simultaneously to perform a screen-filling special move, obliterating your opponents in seconds.

Although the arcade title transitioned to the Sega Saturn flawlessly, the PlayStation version was an unmitigated disaster. It suffered from poor animation quality, constant slowdown, exhausting loading screens, and a muddled soundtrack.

Worst of all, the tag mechanic was inexplicably removed from the PSOne version, despite the fact it was X-Men Vs. Street Fighter's biggest selling point. You could still select two combatants, but switching them in mid-battle wasn't an option.

Even though the Saturn is branded as a failure, this is one of the few times where it came out on top over Sony.