Ms Pac Man Sega Genesis Extend Mode Starting on Normal, Arcade Part 1 

I unofficially called this extend mode because with a game genie code you can use a level select and select beyond level 32. 33 and up allows you to play through the game with a little more difficulty and different mazes colors.
Game Genie codes used:
For Level Select:
AADT-AAEE
AADT-AAEJ
Faster Boost When Pressing C:
FA8A-AAFA
P1 Starts With 9 Lives:
BEEA-AACA