Phantasy Star box art

Sega Master System · cheat codes

Phantasy Star cheats & codes

80 codes for Phantasy Star on the Sega Master System, including Action Replay codes.

Action Replay (36)Other codes (44)

Phantasy Star 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.

EffectCode
Invincibility (Alis)00C4-01FF
Invincibility (Myau)00C4-11FF
Invincibility (Odin)00C4-21FF
Invincibility (Noah)00C4-31FF
Infinite Magic (Alis)00C4-02FF
Infinite Magic (Myau)00C4-12FF
Infinite Magic (Noah)00C4-32FF
Gain 255 Meseta From Every Enemy00C4-E0FF
Maximum Level Alis00C4-051E
Maximum Level Myau00C4-151E
Maximum Level Odin00C4-251E
Maximum Level Noah00C4-351E
Max HP Alis (On Status Screen)00C4-06FF
Max HP Myau (On Status Screen)00C4-16FF
Max HP Odin (On Status Screen)00C4-26FF
Max HP Noah (On Status Screen)00C4-36FF
Max MP Alis (On Status Screen)00C4-07FF
Max MP Myau (On Status Screen)00C4-17FF
Max MP Odin (On Status Screen)00C4-27FF
Max MP Noah (On Status Screen)00C4-37FF
Max Attack Alis00C4-08FF
Max Attack Myau00C4-18FF
Max Attack Odin00C4-28FF
Max Attack Noah00C4-38FF
Max Defense Alis00C4-09FF
Max Defense Myau00C4-19FF
Max Defense Odin00C4-29FF
Max Defense Noah00C4-39FF
No Random Battles00C2-0CFF 00C2-0DFF
Infinite Meseta00C4-E1FF
MoneyC4E0:XX C4E1:XX
EXPC403:XX C404:XX
HPC406:XX
MPC407:XX
Quantity of Items Up To 28C4E2:XX
Thru C4E8 ItemsC4C0:XX

Phantasy Star 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.

EffectCode
Gain 255 Meseta From Every Enemy00C4-E0FF
Infinite Magic00C4-02FF
Max HP [On Status Screen]00C4-06FF
Max MP [On Status Screen]00C4-07FF
Max Attack00C4-08FF
Max Defense00C4-09FF
Infinite Magic00C4-12FF
Maximum Level00C4-151E
Max HP [On Status Screen]00C4-16FF
Max MP [On Status Screen]00C4-17FF
Max Attack00C4-18FF
Max Defense00C4-19FF
Invincibility00C4-21FF
Maximum Level00C4-251E
Max HP [On Status Screen]00C4-26FF
Max MP [On Status Screen]00C4-27FF
Max Attack00C4-28FF
Max Defense00C4-29FF
Invincibility00C4-31FF
Infinite Magic00C4-32FF
Maximum Level00C4-351E
Max HP [On Status Screen]00C4-36FF
Max MP [On Status Screen]00C4-37FF
Max Attack00C4-38FF
Max Defense00C4-39FF
Level 3000C4-051E
Level 3000C4-151E
Level 3000C4-251E
Level 3000C4-351E
Item Modifier First Slot00C4-C002 00C4-E802
Item Modifier Second Slot00C4-C102 00C4-E902
No Random Battles00C2-0CFF 00C2-0DFF
No Random BattlesC3F-B1A-A21
Lots Of Random BattlesB4F-B2A-08D
No Random BattlesC9F-5CF-A29
Lots Of Random Battles00F-5CF-A29
Infinite Meseta00C4-E1FF
Start A New Game With 65,535 MSTFF6-26F-E6A FF6-27F-E6A
Start A New Game At Level 301E6-F8E-E6E
Infinite HP7E5-C9E-3B7
Infinite MP - In Battle1AE-ABE-A22
Infinite MP - Outside Battle1AE-58E-A22
Infinite Meseta2AC-09D-6E2
Walk Anywhere004-FE8-E6E

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.

Phantasy Star walkthroughs & guides

GameFAQs Walkthroughs, FAQs & message boardsHowLongToBeat How long it takes players to finishspeedrun.com World records & speedrun routesMobyGames Credits, releases & screenshots

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Ys I Master System · 1988 · RPG Classic

Back to Phantasy Star: 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.