Which company developed this American football video game series  whose engine was used for Mutant League Football?
Mutant League Football:  The game was designed using the "Madden '93" engine, and features a different take on football, where the games resemble a war as much as a sporting competition. Madden NFL: Madden NFL (originally known as John Madden Football until 1993) is an American football video game series developed by EA Tiburon for EA Sports.
EA Tiburon