Here are all the guides, tips, and strategies to enjoy playing Metroid: Zero Mission with cheats and unlockables.
Cheats
The game is fun by itself, but cheating makes it better. Always be sure to input codes with a CodeBreaker or GameShark. All the below codes are compatible with most emulators.
Note: before entering cheats, be aware that altering the game can cause random freezing and several other glitches.
CodeBreaker Codes
| Effect | Code |
|---|---|
| Master Code (must be enabled) | 000071C3 000A 10000968 0007 |
| Fall Through Floors (hold L+R and press DOWN) | 74000130 007F E30013E8 001E |
| Jump Through Ceilings (press Up + A) | 74000130 03BE E30013E8 FFE2 |
| Max Health | 83001530 0513 |
| Max Missiles | 83001532 03E7 |
| Max Power Bombs | 33001535 0063 |
| Max Super Missiles | 33001534 00C7 |
| Mega Jump | 74000130 03FE E30013EC 0009 |
| Super Dash Always Charged | 330013DC 0077 |
| Super Dash Sooner | 730013DE 0001 830013DE 00A0 |
| Unlimited Health | 83001536 0513 |
| Unlimited Missiles | 83001538 03E7 |
| Unlimited Power Bombs | 3300153B 0063 |
| Unlimited Super Missiles | 3300153A 00C7 |
| Walk Through Walls (hold L+R) | 74000130 02EF E30013E6 001E 74000130 01DF E30013E6 FFE2 |
GameShark Codes
| Effect | Code |
|---|---|
| Master Code (must be enabled) | F8000970 00000101 45584D42 001DC0DE |
| 0:00:00 Game Time | 23000150 00000000 |
| Access All Extras | 00000000 82300014 000000FF 00030002 |
| Alarm Never Sounds | 600BC5C0 000091E0 |
| Always Fire Charged Shots | 6000FAE0 0000304A |
| Break Blocks With Beam | 600B2478 000046C0 600B23D4 0000E001 |
| Change Difficulty to Easy (save & reload) | 0300002C 00000000 |
| Change Difficulty to Normal (save & reload) | 0300002C 00000001 |
| Change Difficulty to Hard (save & reload) | 0300002C 00000002 |
| Entire Map Displayed | 600D9688 0000E006 600D95AC 0000E005 |
| Fall Through Floors (Hold L + R + Press Down) | D4040130 0000007F D3000044 0000FC84 |
| Gallery Unlocked | 13000014 00000001 |
| Hard Mode & Time Attack Unlocked | 23040C4C 0001FFFF 13040C50 00000101 |
| Have 999 Normal Missiles | 13001538 000003E7 13001532 000003E7 |
| Have 99 Power Bombs | 0300153B 00000063 03001535 00000063 |
| Have 199 Super Missiles | 0300153A 000000C7 03001534 000000C7 |
| Have All Abilities | 1308153E 0000FFFF 1308153C 00009F9F |
| Have All Bombs & Beams | 1300153C 0000FFFF |
| Have All Bombs & Power Bombs | 0200153C 00000080 |
| Have All Suits & Misc Items | 1300153E 0000FFFF |
| Have Charge Beam | 0200153C 00000010 |
| Have Gravity Suit | 2300153E 2020 |
| Have High Jump Boots | 2F03E104 09BEA968 |
| Have Morph Ball | 0200153E 00000040 |
| Have Power Grip | 0200153E 00000080 |
| Have Screw Attack | 0200153E 00000008 |
| Have Space Jump | 2300153E 0404 |
| Have Speed Booster | 0200153E 00000002 |
| Have Varia Suit | DB0FCDE1 00007EB6 |
| Have Wave Beam | 0200153C 00000004 |
| Jump Through Ceilings (press SELECT + UP) | D3000044 0000FC44 |
| Map Completed | 03041540 000000FF |
| Mega Jump | 74000130 03FE E30013EC 0009 |
| One Shot Enemies | 600A0878 000046C0 |
| Open All Doors (Press L + R) | 0503DF34 00000087 00000000 00000000 FA9A3A16 72B2F833 |
| Original Metroid Unlocked | 13000018 00000002 |
| Projectiles Go Through Walls | 6009F4C0 000046C0 6009FB0C 0000E006 |
| Unlimited Health | 13001536 000002BB |
| Unlimited Missiles | 13001538 000003E7 |
| Unlimited Mission Time | 1300095E 00000000 |
| Unlimited Power Bombs | 0300153B 00000063 |
| Unlimited Super Missiles | 0300153A 000000C7 |
| Unlimited Time to Escape from Tourian | 13000962 00000009 |
| Unknown Items Enabled | 13001542 00000001 |
| Use Beam to Open Red/Green/Yellow Doors | 600B5F10 000046C0 |
| Walk Through Walls (Press L + R) | 74000130 02EF E30013E6 001E 74000130 01DF E30013E6 FFE2 |
Passwords (Original Metroid)
When you beat the game once, you will unlock the ability to play Original Metroid (NES). Enter any of the following codes in the password screen.
| Effect | Code |
|---|---|
| 255 Missiles, All Upgrades, No Suit | 000000 000020 –y000 000001? |
| As the 12-X 12-K code, but with all powerups | XX—X XXXXXX MKKKKK KKKKNN |
| As the other Yokoi code, but you have the ball | gunpei yokoi? X11151 XXXXXn |
| At Start, but no Maru Mari | 0G0000 000000 000000 000001 |
| Best Ending, No Suit, at end | X—– –N?WO dV-Gm9 W01GMI |
| Debug Mode | BOMBS_ MISSLE SCREW_ ATACK_ (see above) |
| Hard Mode | 999999 999999 KKKKKK KKKKKK |
| Infinite Missiles, Infinite Health, and All Upgrades. | NARPAS SWORD0 000000 000000 |
| Morph Ball & Bombs at start | 000000 000000 4G0000 00000H |
| Norfair, armored, with no ball, and not the greatest ending if you finish | gunpei yokoi? X11111 XXXXXn |
| Reset | 000000 000008 000000 000008 |
| Ridley & Kraid Killed, their statues hit, 255 missiles, 100%, No Suit, Mother Brain Killed, In Norfair | y19pVz YMRGC4 WV–00 0000XT |
| Ridley and Kraid Killed | 000000 000008 000000 00K01O |
| Start at Kraid’s Lair with the Long Beam, Ice Beam, Bombs, High Jump Boots, Screw Attack, Varia, Suitless Samus, and 255 Missles. | JUSTIN BAILEY ~~~~~~ |
| Start with Maru Mari, Long Beam, Bomb, Jump Boots, Varia, Ice Beam, Screw Attack. Your Icebeam looks like the Wave Beam, and you start in Norfair | JUSTIN BAILEY (6 spaces) 000000 |
| Start at Tourian, fully powered, ready for the 2nd ending | V – – – – – – r – e69 t?A00e 00M04p |
| Start at Tourian, fully powered, ready for the 3rd ending | X – – – – – – – N?WO dVue08 001GL2 |
| Start at Tourian, fully powered, ready for the 4th ending | OV – – – – – – r – e6 9t?A08 000GTq |
| Start at Tourian, fully powered, ready for the 5th ending | 7 – – – – – – zVw1Y T – YW01 – W5WCl |
| Start at Tourian, fully powered, ready for the best ending | 5X – – – – – – – N?W OdVue0 0000iu |
| Start at Tourian, fully powered, suitless Samus, ready for the best ending | 0iF – – – – – – w – q 3ax – 50 0000wx |
| Start with Screw Attack | 000000 000000 200000 000008 |
| Suitless Samus | JUSTIN BAILEY / —— —— |
| Suitless Samus at Start. | 000000 000020 000000 000020 |
| Suitless Samus, start on Norfair, infinite missiles, blonde and brown hair color instead of green and lime, no items or upgrades except for missiles. | SAMUS8 RIDLEY 444444 444444 |
| Suitless Samus, Virtually Nothing, In Tourian | XXXXXX XXXXXXX KKKKKK KKKKKK |
Unlockables
General
| Unlockable | How to Get |
|---|---|
| Fusion Gallery | Link up with Metroid Fusion. |
| Gallery | Beat the game once (images will be added when you beat the game differently). |
| Hard Mode | Beat the game once on Normal. |
| Original Metroid (NES) | Beat the game once. |
| Sound Test | Beat the game once on Hard. |
Endings
| Ending | How to Get |
|---|---|
| Samus at a bar in a red top and shorts | Beat the game under 2 hours and 100% in Normal. |
| Samus in a red top and shorts, walking around a city | Beat the game over 2 hours and 100% in Normal or Hard. |
| Samus in full armor sitting on a rock (Worst Ending) | Beat the game in Easy or in over 4 hours and above 15% in Normal or Hard. |
| Samus in just her blue jumpsuit | Beat the game under 2 hours and above 15% in Normal and Hard. |
| Samus overlooking a city in a red top and shorts | Beat the game under 2 hours and 100% in Hard. |
| Samus sitting near a window in a red top and shorts | Beat the game below 15% in Normal. |
| Samus standing in full armor, with a close of her face without it in the background | Beat the game below 15% in Hard. |
| Samus without her helmet looking at the sunset (Fair Ending) | Beat the game around 3 hours and above 15% in Normal or Hard. |
Metroid is an action-adventure game developed by Nintendo and initially released in 1986 for the Famicom. It was later released on NES in 1987. An enhanced remake, Metroid: Zero Mission, was released on Game Boy Advance in 2004.