RetroBowl is a football game that pays homage to the original Tecmo Bowl for NES. There are a variety of teams provided and you can add your own teams and players by editing/adding config files.
Each team has different strengths and weaknesses that parallel real-life teams from the late 80's and early 90's. For example, Miami has a strong passing game but an average running game and a weak defense.
Like in the original, each team has four offensive plays (plus punt and field goal). The defensive player tries to guess the offensive play. If the guess is correct, the offensive play will be stopped cold.
Both 1 and 2 player games are supported. Instructions are available from the main menu. You must use a gamepad.