Over a period of years I managed to reverse engineer the entire Tecmo Super Bowl game into 6502 assembly source code with every piece of code documented and every variable labeled. There was a potential project in the works with said code but that project looks all but dead now. Because of that I am targeting the 30 year anniversary of TSB as the date I will publicly post all of the reverse engineered source code.
Just in time for the Super Bowl, it's the end of season release of long time TSB modder @SBlueman. This meticulous release comes in three flavors: Vanilla, Hard Type, and Hard Type-Road Team as player 2.
Don't let the 'Vanilla' moniker fool you as there is a laundry list of modification from the original game besides the roster updates. For instance, the touchback has been changed to the 25 yard line and the extra point attempt has been moved back to the 15 yard line. There are logic changes like the computer taking less sacks or not kicking a FG too early towards the end of the half. Little things like the animation of the QB being changed as he dropped back...did you see it? To quote Shawshank, " I mean, seriously, how often do you look at a man's shoes?" Please click the above link to read through the list of 30 changes for yourself.
The Hard Type versions are for the "do you even lift, bro" Tecmo crowd as the famed Tecmo Juice gets turned up quickly and the CPU quarterback starts throwing at the receivers you're not covering. Come get some.
You can find this in our download section or at http://sblueman.com