dhapshow

Hey guys! I met a few NHL '94 people at the Long Island Retro Gaming Expo a week-and-a-half ago or so, and I was talking to them about my situation. I got a SEGA about 2 months ago with NHL '94, NHL '97 and NHL '98, and while trying to do a season NONE of these games save. One of the guys was telling me about something like a super cartridge that would have all the games for SEGA and be able to save. Is that a thing? Also, for TECMO Super Bowl for NES, the Tecmo Bowlers every year release an updated version of Tecmo with updated rules (2pt conversions, new teams, updated rosters, etc.) is there an NHL version of that? Thanks for your help!