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MDK Action Replay Codes (NTSC-U)

This page contains Action Replay cheat codes for MDK (NTSC-U) for the Playstation 1. Depending on if you're playing this game on a physical console or an emulator will determine how you use the codes found on this page. People using a physical console will need to purchase a physical Action Replay device to use the codes.

Anyone who is using an Emulator will have a much easier time getting these codes to work (assuming your Emulator supports them). One of the most popular Emulators for the Ps1 is ePSXe and if you'd like to learn how to use the codes on this page for that Emulator, check out my how to get cheat codes to work with ePSXe guide. If you don't see the code you want on this page I recommend you return to my MDK Guides Index and choose a different section.


Always Have Worlds' Smallest Nuke On Pick-Up: 800CB7FC 0001

Game Sped Up (Press R2): 800BAE1C 0001

Unlimited Ammo Chaingun: 800CB564 00C8

Unlimited Ammo Energy: 800CB498 0064

Unlimited Ammo Mortar: 800CB574 0063

Unlimited Ammo Sniper #2: 800CB568 0063

Unlimited Ammo Sniper #4: 800CB570 0063

Unlimited Ammo Sniper #6: 800CB578 0063

Unlimited Ammo Sniper Grenades: 800CB56C 0063

Unlimited Homing Bullets On Pickup: 800CB810 0007

Level Select: 800BACA4 0005

PAL2NTSC: 80082CE6 3C00


Both Modes Unlimited Ammo

50000904 0000
800CB564 0014
50000424 0000
800CB4A4 0014


Unlimited Ammo for Almost All Weapons (Normal Mode)

300CB4A0 0006
300CB564 00FF
300CB4AA 0008
300CB4AE 00C8
300CB4B8 0008
300CB4BC 00C8
300CB4C4 0005
300CB4C8 00FF
300CB4CE 0020
300CB4D2 00C8
300CB4DC 0020
300CB4E0 00C8
300CB4E8 0002
300CB4EC 00FF
300CB4F2 0038
300CB4F6 00C8
300CB500 0038
300CB504 00C8
300CB50C 0007
300CB510 00FF
300CB516 0050
300CB51A 00C8
300CB524 0050
300CB528 00C8
300CB530 0001
300CB534 00FF
300CB53A 0068
300CB53E 00C8
300CB548 0068
300CB54C 00C8
300CB554 0005


Unlimited Ammo Sniper Mode

300CB568 00FF
300CB56C 00FF
300CB570 00FF
300CB574 00FF
300CB578 00FF
300CB57C 00FF


Air Walker (Hold X)

800BE08A 000C


Moon Jump (Press R2 + X)

D00BDBC0 0042


One Shot Enemies

80017218 0000
8001721A 3402
8001715C 0000
8001715E 3402
8005D3D4 0000
8005D3D6 3402