This is the list as it was as of the start of the thread (10th September, apparently)
1. Mario - 105.78 million (17 games)
2. "Wii Series" - 102.47 million (6 games)
3. Pokemon - 42.92 million (11 games)
4. Brain age - 31.91 million (2 games)
5. Guitar Hero - 29.27 million (22 games)
6. Call of Duty - 28.09 million (11 games)
7. Sonic - 24.18 million (19 games)
8. "Lego" - 24 million (22 games)
9. Grand Theft Auto - 22.43 million (4 games)
10. Nintendogs - 22.27 million (1 game)
11. Madden - 19.95 million (24 games)
12. Need For Speed - 18.9 million (19 games)
13. Fifa - 16.06 million (25 games)
14. Imagine: 15.23 million (23 games)
15. Animal Crossing - 14.38 million (2 games)
16. Halo - 14.26 milllion (3 games)
17. The Legend of Zelda - 13.87 million (3 games)
18. "Sims" - 13.73 million (18 games)
19. Final Fantasy - 12.25 million (18 games)
20. Gears of War - 11.15 million (2 games)
21. Rock Band - 10.1 million (23 games)
