Week of Mario and Luigi 4!
That said, it wasn't really that exciting of a week.
-Top 5 is Nintendo
-Pikmin remains in the top 3.
-Youkai Watch has a good 2nd week
-Mario and Luigi deals a fair first week? with almost 100,000.
I hear the Mario and Luigi 3 had 200,000+ for its first week, but I don't really have any other data.
-Boosted by Mario and Danball Senki, 3DS passes the 50,000+ line.