With the Four Player Adapter up to 4 persons can play with the same game simultaneously, with or against each other.
- The selected game must have a 4-player mode.
- Each player must insert a copy of the same game.
- The corresponding number of connecting cables must be available.
- The Four Player Adapter features only the large connecting sockets of the original Game Boy.
- When handling it is important that the person to whom the adapter is directly connected always starts the game.