World Series Major League Baseball (1983) (Mattel) [b1].int ROM Download for Intellivision (). World Series Major League Baseball (1983) (Mattel) [b1].int game is available to play online and download only on Late Games. World Series Major League Baseball (1983) (Mattel) [b1].int ROM for Intellivision download requires an emulator to play the game offline. This Game is English (USA) Version and is the highest quality available.