Alby_da_Wolf on 19 April 2012
The best selling Mario game in this gen, and 2nd best selling Mario game ever, is a 3D Mario, the only 2D Mario that ever beat it was Super Mario Bros on the NES, decennia ago.
http://www.vgchartz.com/gamedb/?name=&publisher=&platform=&genre=&minSales=0&results=25