This page contains Metal Slug 3D Unlockables for Playstation 2 called "Completion bonuses" and has been posted or updated on Sep 4, 2007 by Caggigedy.
- Developer: Snk Playmore
- Publisher: Snk Playmore
- Genre: Action Shooter Third-Person
- Release: Jun 29, 2006
- ESRB: Not Set
You have to finish Story mode as Marco to unlock the Monolith with unlimited ammunition and the Extras menu (with "Mini Game", "Color Edit", "BGM Test", and "Movies" options).
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