Level passwords:
Enter the following passwords to begin game play at the corresponding year with an undefeated record. Note: All fights are for the heavyweight championship.
| Year | Boxer
| Password
|
| 1968 | George Foreman | (None)
|
| 1969 | Ken Norton | WMQQ8LQMV7NX
|
| 1970 | George Foreman | T4Q8QLVQV7NL
|
| 1971 | Joe Frazier | JMQKK-VMV77N
|
| 1972 | George Foreman | W!Q7.P8QF748
|
| 1973 | Joe Frazier | SKQN.V8MF7L4
|
| 1974 | Muhammad Ali | LRQR8P.QF7F2
|
| 1975 | George Foreman | LMQ!KS.MF7-Q
|
| 1976 | Joe Frazier | LJVSCJKQF7F2
|
| 1977 | Ken Norton | G7VD.-KMF7.F
|
| 1978 | Joe Frazier | M!88VPCQF7-C
|
| 1979 | Larry Holmes | 7M89S!CMF7.X
|
| 1980 | Ken Norton | N7.NX!SQF7T.
|
| 1981 | Joe Frazier | DJK4SKSMF7KX
|
| 1982 | Ken Norton | R!CDXJXQF7-8
|
