I don't know how many more times I'll have to repeat this (my guess is endlessly), but you CANNOT play the full Mario Bros., Zelda, or Metroid games. The only full games in Wario Ware, Inc. are the ones shown above (well, except for Staff, which I just put in there for balance).

     In any case, all of the full games must be unlocked. Procedures for unlocking them can be found in the secrets section.