The Legend of Zelda: Four Swords

The Legend of Zelda: Four Swords is a relatively short game alongside A Link to the Past for the Game Boy Advance. It was the first multi-player Zelda game to be released, and the first in the Four Swords lineup. The game introduced Vaati as a new main boss for the franchise. To play it, one must link up two to four GBA systems each with its own game.