In excellent all round condition for age. Tested and working fine. The Mastermind pen no longer works. There is a small amount of sticker residue to front of box. The Vintage Super Sonic Electronic Mastermind by Invicta from the late 70s/early 80s is a classic educational game. This game involves strategic thinking and is perfect for those who enjoy testing their problem-solving skills. The boxed packaging ensures that the game is well preserved and ready to be enjoyed by a new generation of game enthusiasts.
