TWRoO on 28 November 2008
I presume when you said "system" you meant console only..... because PSP has already got the crown for best 2nd place system.
Some other records that will be set this gen.
Most owned game: Wii Sports (Super Mario Bros. is somewhere between 40 million and 50 million depending on which versions you include (like VC for instance) )
Highest sales AND attach ratio and for a non bundled game: Wii Play or Wii Fit
Best selling additional perephrial ever: Balance Board. (not sure about how many NES zappers there are, though it was bundled with NES [some?/many?/all?] so it's a debatable one as to whether it is "additional")
