Deep in the bowels of Tecmo Super Bowl's code one can find that the creators were working on implementing penalties into the game but thankfully never got around to it. There are no offsides or false starts or randomly generated issues. Last but not least, there are no late hits or personal fouls. As a defender there is often times no more satisfying move than to repeatedly dive on your already downed opponent, especially after they manage to score a touchdown. Diving on your opponent after a touchdown is unique because it's the only time in the game where you can make your opponent fumble after the play is over and this is noteworthy because a fumble erases the stats of the last play.
For a lot of leagues where stats were poured over in an attempt to win a virtual MVP trophy diving on your opponent after a touchdown was illegal and could cause one to be booted out of the league. This seemingly simple hack came about years later when someone thought to ask if you could turn off fumbles after a score and Jstout came through with the hack (Bruddog packaged the set code). Now people can pound their opponent with no mercy and with no guilt.
Edited by Knobbe