Sega Master System · cheat codes

Alien 3 cheats & codes

29 codes for Alien 3 on the Sega Master System, including Action Replay codes.

Alien 3 Action Replay codes

How to use: Datel's Action Replay sat between the console and the game. Enter codes on its menu before starting the game, or paste them into your emulator's cheat menu.

Effect	Code
Infinite Lives	`00C4-2409`
Infinite Health	`00C4-6A19`
Prisoner Modifier	`00C4-C1XX`
Infinite Machine Gun	`00C4-2763`
Infinite Flamethrower	`00C4-290A`
Infinite Grenades	`00C4-2D0F`
Infinite Time	`00C4-7903`
Infinite Missiles	`00C4-2B99`
Unlimited Other Option	`00C4-2F63`
Invincible	`00C4-8504`

Alien 3 Other codes

How to use: Additional codes collected by the community. Enter them through your emulator's cheat menu, choosing the format that matches your emulator.

Effect	Code
Infinite Machine Gun	`00C4-2763`
Infinite Flamethrower	`00C4-290A`
Infinite Grenades	`00C4-2D0F`
Infinite Time	`00C4-7903`
Infinite Missiles	`00C4-2B99`
Unlimited Other Option	`00C4-2F63`
Invincible	`00C4-8504`
Invulnerability	`002-8BD-3B4`
Start with ?? Lives	`006-4E8-3B6`
Infinite Lives	`00A-D3A-3BE`
Infinite Health	`7EF-F0C-3B7`
Infinite Time	`00B-266-3BE`
Infinite Machine Gun	`3A6-FE7-2A2`
Infinite Flame Thrower	`3A2-C16-2A2`
Infinite Missles	`008-C07-3BE`
Infinite Lives	`00C4-2409`
Infinite Health	`00C4-6A19`
Prisoner Modifier	`00C4-C100`
Enable Level Select Menu	`00C0-0AC5`

Using cheats today

Original cheat devices like the Game Genie, Action Replay and GameShark still turn up second-hand and work with original cartridges. Most modern emulators also have a built-in cheat menu that accepts these formats, so you can toggle codes on and off without extra hardware. Codes can differ between regional releases and revisions of a game; if one doesn't work, try the code list for another version.

Cheats can corrupt save files in rare cases, so back up your saves before experimenting.

More Master System games with cheats

Sonic the Hedgehog Master System · 1991 · Platformer Classic

Sonic the Hedgehog 2 Master System · 1992 · Platformer Classic

Alex Kidd in Miracle World Master System · 1986 · Platformer Classic

Sonic Chaos Master System · 1993 · Platformer Classic

Super Mario Bros. NES · 1985 · Platformer Classic

Super Mario Bros. 3 NES · 1988 · Platformer Classic

Back to Alien 3: is it worth playing?

Cheat codes are from the libretro-database community collection, used under CC BY-SA 4.0; the code tables on this page are shared under the same license. Codes are provided as-is: some may not work on every version of the game.