Some info about the “beta-hack”: how you probably know, there are 5 unused levels in the “Final NSMB game code” that come from the beta version of NSMB : The beta revival would have had all the secret levels playable plus some more from the early Mario Bros DS tech demo and the E3 beta version, the removed “traditional” 2 Players mode in the levels and mega goombas. LucaPM was working on a “beta-hack” to restore more removed stuff from the game. Update: it seems that this hack was found by Trekki, Tanks, Sonicandtails and other “NSMB hackers” too, along with the version of LucaPM and other gamers.