The Nintendo Game Link Cable (Japanese: ゲームボーイ専用通信ケーブル, romanized: Gēmubōi sen'yō tsūshin kēburu, lit. 'Game Boy dedicated communication cable') is an accessory for the Game Boy line of handheld video game systems, allowing players to connect Game Boys of all types for multiplayer gaming. Depending on the games, a Game Link Cable can be used to link two games of the same title, like Tetris, or two compatible games like Pokémon Red and Blue. Games can be linked for head-to-head competition, cooperative play, trading items, unlocking hidden features, etc.