Self-explanatiory. Best selling titles in 2008 (so far). I'm fairly certain most of you will be surprised by the 1st place...
The highest selling (if multiplay) is listed to the left. Lowest selling to the right.
(0. Wii Sports - 24.15M)
1. Mario Kart Wii - 14.12M
2. Wii Fit - 13.57M
3. Grand Theft Auto (X360 + Ps3) - 12.01M
4. Wii Play - 11.22M
5. Super Smash Bros. Brawl - 8.51M
6. Mario & Sonic at the Olympics (DS + Wii) - 7.87M
7. CoD:WaW (X360 + Ps3 + Wii + Ps2 + DS)- 7.5M
8. Guitar Hero 3 (Wii + X360 + Ps3 + Ps2) - 7.1M
9. Lego Indiana Jones (X360 + DS + Wii + Ps2 + Ps3 + PsP) - 6.96M
10. Madden 09 (X360 + Ps3 + Ps2 + Wii + PsP + DS) - 6.07M
11. Fifa 09 (Ps3 + X360 + Ps2 + Wii + PsP + DS) - 5.86
12. Guitar Hero: WT - (Wii + X360 + Ps2 + Ps3) - 5.7M
13. New Super Mario Bros. - 5.64M
14. Star Wars: The Force Unleashed - (X360 + Wii + Ps3 + Ps2 + DS + PsP)- 5.54M
15. Brain Training - 5.51M
16. Mario Kart DS - 4.92M
17. CoD 4 (X360 + Ps3 + DS) - 4.84M
18. Nintendogs - 4.61M
19. Kung Fu Panda (X360 + DS + Wii + Ps2 + Ps3)- 4.54M
20. More Brain Training - 4.44M
21. Gears of War 2 - 4.34M
22. Rockband (Wii + X360 + Ps3 + Ps2) - 4.19M
23. PES 2009 (Ps3 + Ps3 + X360 + PsP)- 4.12M
24. Pokemon Diamond/Pearl - 4.01M
25. Metal Gear Solid - 3.8M
26. Sega Superstar Tennis (X360 + Wii + DS + Ps3 + Ps2 + PsP)- 3.47M
27. Super Mario Galaxy - 3.15M
28. The Simpsons Game (DS + X360 + Ps2 + Wii + Ps3 + PsP) - 3.1M
Other titles, that are not yet placed. NOT UPDATED
Assassin's Creed (X360 + Ps3) - 2.79M
Monster Hunter Freedom 2nd G - 2.65M
GT5: P - 2.6M
Carnival Games (Wii + DS) - 2.64M
Pokemon Mystery Dungeoun 2 - 2.55M
Fallout 3 (X360 + Ps3)- 2.52M
Mario Party DS - 2.49M
NFS: Undercover (X360 + Ps3 + Ps2 + Wii + PsP + DS) - 2.37M
Fable 2 - 2.17M
Pokemon Platinum - 2.14M
Guitar Hero: Aerosmith (Wii + X360 + Ps2 + Ps3) - 2.08M
Guitar Hero: On Tour - 2.07M
The list is fairly incomplete, and I will add any games I have missed. Feel free to post any games that have above 3M for the year.
Hopefully it is interesting...
Edit: Added Pokemon Diamond/Pearl (thanks MANUELF) and Star Wars: The Force Unleashed (thanks to... forgot the name)
Edit 2: Added lots of other titles.
Edit 3: Added Rockband (thanks Noname2200)
Edit 4: Added DS version of Fifa 09 (Thanks to RDP)
http://www.vgchartz.com/games/userreviewdisp.php?id=261
That is VGChartz LONGEST review. And it's NOT Cute Kitten DS