Planet of the Apes

At the title screen, press B, A, Left, Down, Up, Right. Start the game to access a cheat menu containing a level select and toggles for infinite health and all weapons.

Level - Password

2 - 64N4HY
3 - F5BMGF
4 - B1SKZR
5 - 76FNHB
6 - P7GRXK
7 - 6B7VM#
8 - QK6293
9 - JDDUTJ
10 - 046PJ#
11 - 3#9QLS
12 - C12KYY
13 - CBCYPH