Man I miss the singleplayer "story" mode thing. It was a great way to build skills for matches with friends.
Have they removed the campaign from newer entries?
As far as I know/remember. 3, the PSP one, 4, and 5 didn't have it. There was still the character specific arcade mode, and the various "arcade mode with a twist" stuff, but the campaign with the map, dungeons, and story was exclusive to 2.