So it appears that for the Playstation 3 there will be a release of X-Men Arcade for Playstation Network and the Sega Dreamcast Collection. The last time I ever played X-men Arcade was at that Playdium in Edmonton, which I have no reason why they closed down. I think six people were able to play at the same time with characters such as Wolverine, Cyclop and Nightcrawler. Enjoy that side scrolling action.
Sega Dreamcast Collection on the other hand contains my favorite Dreamcast game, Powerstone 2. Originally playing it I had no idea what it was from, but years later they released a television show on YTV. In my opinion it is a better Super Mario Smash Brothers, check the link.