Level Selection
I'm highly anticipating 0.227 and am slowly going through all games from A-Z including many I've never tried before. Latest oddity is Namco's 1981 Warp & Warp, which was licensed to Rock-Ola (who dropped the & for some reason). Trying the clone revealed that it has a high score table while the original has none. However, the original has an extra DIP for "Level Selection" which the clone doesn't, which means both sets are recommended for different reasons. Checking further, the only other Namco game with a level selection dip is 1988's Bakutotsu Kijuutei. What's funny is it's labeled as a cheat in Warp but not labeled as such in Bakutotsu.