Tecmo Bowl/YMMV

Even Better Sequel: Tecmo Super Bowl has 28 teams, a battery-backed save, NFLPA/NFL licenses, customizable playbooks/rosters, injuries, and even a season mode where two players can participate in the games.
First Installment Wins: The NES version of Tecmo Super Bowl is pretty much ingrained in the minds of old-schoolers. The sequels released for the SNES and Mega Drive (Genesis) weren't nearly as popular as the first Tecmo Super Bowl game.
Game Breaker: ["Los Angeles #34" in the original NES game (Otherwise known as "Bo Jackson".) When he got the ball, the outcomes were "tackle for loss" or "Touchdown".
Good Bad Bugs: On the NES version, a player can score a touchdown with being in his/her own zone.
Memetic Mutation: "Ready, down... HUT HUT HUT HUT HUT HUT HUT HUT HUT HUT HUT HUT..."
- TOUCHDOWN THURMAN THOMAS
Porting Distillation: The arcade to NES port of Tecmo Bowl is seen as this. Instead of two teams to pick, there are now twelve teams and a password option to continue later play.
That One Level: Facing Los Angeles as one of the final two games in Tecmo Bowl, thanks to Bo Jackson.
Tough Act to Follow: The first Tecmo Super Bowl game on the SNES and Mega Drive (Genesis). Following the success of the NES Tecmo Super Bowl game, it was released nearly two years later under the same name, but with noticeable changes.