). You can unlock additional content by completing specific tasks: Special Music & Desktops : Complete various games in Arcade mode. Ending Feature
| Unlockable | How to Unlock | |------------|----------------| | Art Gallery 1 | Complete any mission in Metal Slug 1 | | Art Gallery 2 | Complete any mission in Metal Slug 2 | | Art Gallery 3 | Complete any mission in Metal Slug X | | Art Gallery 4 | Complete any mission in Metal Slug 3 | | Art Gallery 5 | Complete any mission in Metal Slug 4 | | Art Gallery 6 | Complete any mission in Metal Slug 5 | | Caravan Mode | Complete all missions in Metal Slug 1 | | Sound Test | Complete all missions in Metal Slug 2 | Metal Slug Anthology Psp Cheat Codes
: Complete all 7 games on Hard with limited continues to unlock Desktops 2 Special Music Infinite Tokens Glitch : To bypass the grind, play Metal Slug 3 Metal Slug Anthology Psp Cheat Codes
The for PSP does not feature traditional "cheat codes" entered during gameplay. Instead, players typically use exploit-based methods for currency or external CWCheats through homebrew/emulators to modify game values like health or ammo. Standard Unlockables & Exploits Metal Slug Anthology Psp Cheat Codes
Metal Slug 3 has the most robust cheat system on the Anthology disc.
| Effect | Code | |--------|------| | | 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) |
| Button | PSP Equivalent | |--------|----------------| | ↑ ↓ ← → | D-Pad | | A / B | × / ○ (Japan layout) | | Start | Start button | | Select | Select button | | L / R | Left and Right shoulder buttons |