Here is a topic for Aki-at, since he loves sale numbers.
01. [NDS] Dragon Quest VI: Realms of Reverie (Square Enix) - 909,981 / NEW
02. [WII] New Super Mario Bros. Wii (Nintendo) - 723,116 / 3,208,266
03. [PSP] Kingdom Hearts: Birth By Sleep (Square Enix) - 674,669 / NEW
04. [NDS] Tomodachi Collection (Nintendo) - 455,931 / 2,767,879
05. [WII] Wii Fit Plus (Nintendo) - 286,225 / 1,584,758
06. [NDS] The Legend of Zelda: Spirit Tracks (Nintendo) - 229,206 / 550,146
07. [WII] Wii Sports Resort (Nintendo) - 192,661 / 1,735,467
08. [NDS] Pokemon Heart Gold / Soul Silver (Pokemon) - 178,305 / 3,560,902
09. [PS3] Final Fantasy XIII (Square Enix) - 169,029 / 1,867,285
10. [PSP] Monster Hunter Portable 2nd G (PSP the Best Reprint) (Capcom) - 127,927 / 164,072
This does show what to expect with SEGA's End of Eternity. I don't think it will break 300,000 in its lifetime in Japan (on PS3). Why? Because look at how front loaded RPGs are over there. In America, WRPGs sell for months, not over there, unless you are Dragon Quest.