Originally sold as a pack-in with the venerable handheld system, Tetris for the Game Boy is a rock solid, platform-friendly port of the puzzling PC classic. In addition to including two one-player modes (endurance and 25-line), the game pak introduced to the Tetris formula a special two-player link mode in which players competed to finish 30 lines. By vanquishing multiple lines with a single block placement, players could send lines of blocks to their opponent's screen, making the game very competitive.