via http://gbatemp.net/t309193-new-super-mario-bros-3-v2-5a

GBAtemp member SKJmin has updated his New Super Mario Bros. 3 hack to version 2.5a. See what's been added in the change log below, and join the on-going discussion for more information about this modified NDS game. Also, be sure to check out the author's homepage for level walkthroughs, hints, and FAQ's about this project.

Note: You must use the [U] version of New Super Mario Bros for this patch.


QUOTE(Change Log 09/21/11)
  • 49 new bonuslevels
  • 18 new cameos
  • 75% of all bonus rooms were edited
  • advanced bossfights
  • reduced difficulty
  • fixed timers
  • a lot of graphical changes (almost each level)



http://newsupermariobros3.com/