- Difficult Mode B Game B, a difficult mode in which the numbers are displayed in both left and right positions. - Elements of gameplay As you play through the game, you will unlock new characters that you can use. The rules are a little different for each character. - Recreating a nostalgic atmosphere The instructions that come with the electronic game reproduce the atmosphere of the time. In addition, you can play with deteriorating reflectors and polarizers. I hope you enjoy the nostalgic sense of play!