This page contains Metal Slug 3 Unlockables for Playstation 2 called "Completion bonuses" and has been posted or updated on Dec 16, 2009 by guitarhero1224. Let us know what you think of this Unlockable by thumbs voting.
You have to finish and save the game under the normal difficulty setting to unlock the "Chubby Isle Paradiso" (Fat Island), "Storming The Mothership" (UFO), and "Ending Feature" options at the main menu
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