The following are known Action Replay Codes for Planet of the Apes on SEGA Dreamcast (Dreamcast). These codes were also known as GameShark Codes and in most cases will work on both devices.

Device Compatibility: Action Replay & GameShark

(m)
8f9882ab
39e6f865
16d93d60
e82cb840

PAL To NTSC
80095368 0000
801E4490 0000

All Flags
da61531d
581e32ec

Infinite Health
8003268C 0100
8003268E 2402

Inf Health
910A74C0

Inf Pistol Ammo
042d50fd
09c33c76

All Flags
910A0BCA

Moon Jump
800A536A BDFF
801E5F80 FFFF

Infinite Health
0c9bfbea
dc661a90