Ken Griffey Jr.'s Slugfest is a baseball game developed by Angel Studios and Software Creation and published by Nintendo for the Nintendo 64 and Game Boy Color. The game features many of the same play modes found in its' predecessor, Major League Baseball Featuring Ken Griffey, Jr. such as Exhibition, Season, Home Run Derby and World Series.

A new featured added to Slugfest is Create a Player, which allows players to create their own baseball player with custom stats to control in Season. There are 20 spots available for created players (10 for infielders/outfielders and 10 for pitchers).