To celebrate the 20-year anniversary of the release of the Famicom version of Super Mario Bros. in Japan, Nintendo today rereleased the Famicom Mini version of Super Mario Bros. as well as released Dr. Mario/Panel de Pon and Mario Tennis Advance.
Of course, Mario is actually 24 years old, having first appeared in Donkey Kong in 1981, but Nintendo won't let a little technicality like that spoil the celebration.