4-in-1 Fun Pak is a collection of board games for the Game Boy. It includes the games Checkers, Chess, Reversi, and Backgammon, and has the option to either play against a CPU or against another human player by either sharing the Game Boy or linked with another Game Boy using the Link Cable.

In this run, Winslinator decides to play Backgammon against the CPU at its hardest setting and trounces it in record time by manipulating it into making the worst moves. For more details on how it was done, you can read the author's notes.