These inputs work on the original unmodified version of the game and are entered using the PSP’s D-pad and face buttons.
| Effect | Code | |--------|------| | Mission Select | Highlight Arcade → Hold L + R → Up, Up, Down, Down, Left, Right, Left, Right, Square, Circle | | Player color edit (VS mode) | At character select: Hold Start + Select → press Up(3), Down(3), Left(3), Right(3) |
| Effect | Code | |--------|------| | Level Select | At main menu: Hold L + R → Up, Up, Down, Down, Left, Right, Left, Right, Circle, Triangle | | Fat mode (characters become fat when eating food) | Up, Down, Left, Right, Up, Down, Left, Right, X, Square |
For the average player, the Level Select (L+R+X) is the most valuable tool, allowing you to practice specific boss patterns without replaying the whole game. For those seeking god-mode status, utilizing CWCheat via a modded PSP or emulator is the only way to achieve infinite health and ammo.
Metal Slug Anthology PSP Cheat Codes and Unlockables Mastering the Metal Slug Anthology on the PSP can be a daunting task, even for seasoned arcade veterans. While the game features some built-in secrets and a robust unlockable system, many of the traditional "cheats" (like infinite lives or invincibility) require external tools like CWCheat or PPSSPP settings. Built-in Cheat Menu & Secrets Metal Slug Anthology Psp Cheat Codes
There is one primary button-based code commonly cited for accessing a hidden menu within the options screen.
Options Cheat Menu: At the OPTIONS screen, press X, Circle, Square, Triangle, Triangle, X, Circle, Square. This is reported to unlock a special menu with various gameplay advantages.
Combat School Chat: While the Combat School is loading, rapidly press Square until the menu appears. The instructor will ask if you want to chat.
Become an Alien: In Combat School, acquire 1000 points. Your character will then have greenish skin. Unlockable Content These inputs work on the original unmodified version
You can unlock galleries and music by completing the games under specific conditions. Most of these require you to beat the games with Limited Continues. Unlockable Requirement Art Gallery 1–7
Beat each corresponding game (MS1, MS2, MSX, MS3, MS4, MS5, MS6). Tonko Art Gallery Pass all 7 games on Easy with limited continues. Desktops 1 Pass all 7 games on Normal with limited continues. Desktops 2 & Special Music Pass all 7 games on Hard with limited continues. Special Art Beat all games in the anthology. Easy Token Glitch
To quickly earn tokens for the gallery, play through Metal Slug 3 or 5 on Hard. Just after defeating the final boss, save the game immediately. Watch the credits, then return to the main menu to receive 5 tokens. Reload your save to repeat the ending and farm tokens indefinitely. CWCheat & PPSSPP Codes
For players using a PSP with Custom Firmware (CFW) or the PPSSPP emulator, you can use hex codes to enable powerful cheats. Common Game IDs Metal Slug Anthology Cheat Codes | PDF - Scribd | Effect | Code | |--------|------| | Level
Code 1: Infinite Continues
Code 2: Play as Eri or Fio (Secret Characters)
Code 3: Fat Mode (Pigs Fly)