This page contains New Super Mario Bros. Unlockables for Nintendo DS called "Unlock World 4" and has been posted or updated on Sep 25, 2006 by spikelet13.
- Developer: Nintendo
- Publisher: Nintendo
- Genre: Action Platformer
- Release: May 15, 2006
- ESRB: Everyone
Unlock World 4
For this you have to beat the boss in the last castle of World 2 as Mini Mario
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