Pac Attack: Appendix for puzzle mode
Select "Pac-Attack" at the main menu. When the Pac-Attack menu is displayed, highlight the "Puzzle" option, then hold Right and press A. Appendix mode allows you to play puzzle mode with Pac-man appearing less often, but the clusters are consistent rather then random. You will get the same clusters each time you play a level.
Pacmania: Extra lives
The following can be done three times per game. Note: If you get a "Game Over" and continue, and have already done it three times it does not count. Get one of the big Pacs (yellow balls). Each enemy will become vulnerable and turn blue. Eat four enemies and when 1600 appears on the screen, you should have one new life.