Well a few things have changed this year due to a few big titles that came out over the holidays. Sadly vgchartz's PC figures still are rather poor so PC popular IPS such as portal, left 4 dead, and mass effect got the shaft, but here it is top 10 new ips of this generation according to vgchartz. I also did not count sales for any dlc, which only had a big effect on rock band sales. Finally I only included sales for current gen games. I did include the ps2 port of rock band since its the same game as the current gen versions... but not completely new games that came out on the ps2, 3ds, or vita for an ip that started this gen.
EDIT Adding a few games mentioned but I'll leave the games that they replaced as runner ups.
1. Wii series
(Wii Sports, Wii Sports Resort, Wii Play, Wii Fit, Wii Fit Plus, Wii Party, Wii Music, Wii Play: Motion)
2. Brain Age
(Brain Age, Brain Age 2, Big Brain Academy, Big Brain Academy: Wii Degree)
3. Assassin's Creed
(Assassin's Creed, Assassin's Creed 2, Brotherhood, Revelations, Bloodlines, Discovery, Altair's Chronicles)
4. Just Dance
(Just Dance 3, Just Dance 2, Just Dance, Just Dance Kids, Just dance Wii, Just Dane Kids 2, Just Dance Spinoffs)
5. Kinect Series
(Kinect Adventures!, Kinect Sports, Kinect Sporks: Season Two, Kinectimals, Kinect Joy Ride, Kinect: Disneyland Adventures, Kinectimals: Now with Bears!)
7. Rockband Series
(Rock Band, Rock Band 2, Rock Band 3, and countless spinoffs)
(41 different Imagine games...)
9. Gears of War
(Gears of War, Gears of War 2, Gears of War 3, Gears of War Triple Pack)
10. Professor Layton
(Professor Layton and the Curious Village, Diabolical Box, Unwound Future, Last Specter)
(Uncharted, Uncharted 2, Uncharted 3)
12. Saints Row
(Saints Row, Saints Row 2, Saints Row: The Third)
(LittleBigPlanet, LittleBigPlanet 2, LittleBigPlanet(PSP))
14. High School Musical
(High School Musical, High School Musical 2, High School Musical 3)
(Resistance, Resistance 2, Resistance 3, Resistance: Retribution)
16. Carnival Games
(Carnival Games, Carnival Games: Mini Golf, New Carnical Games, Monkey See Monkey Do!)
(Bioshock, Bioshock 2)
Looking ahead bioshock, assassins creed, and just dance will likely move up the list as they all have current gen sequels coming out this year that should sell well. Mass Effect will enter the list and replace Resistance, and probably pass bioshock, littlebigplanet, and saints row as well. Gears of War might end up passing the Imagine series, Uncharted might pass Professor Layton. So by the end of this gen the list will likely be
1.Wii, 2. Assassins Creed, 3. Just Dance, 4. Brain Age, 5. Kinect, 6. Nintendogs, 7. Rockband, 8. Gears of War, 9. Imagine, 10. Uncharted, 11. Professor Layton, 12. Mass Effect, 13. Saints Row, 14. Bioshock, 15. LittlebigPlanet.
Left 4 Dead and Portal would have made the list and been over the 10mil mark if all PC sales and orange box sales were included.
Overall the big new IP winners this gen were Nintendo and Ubisoft who each had 3 new ips sell 19mil+ this gen. But imo new IPs performed poorly this gen. If we included current gen sales of any IP including those that came out in previous years, only the top 4 new ips would have made the list, as mario, call of duty, pokemon, grand theft auto, guitar hero, lego, Halo, Fifa, madden, Sonic, and the sims, all outsold the kinect series, and other ips such as Final Fantasy, zelda, battlefield, elder scrolls, gran turismo, Fallout, Forza, Red Dead, NBA, Dragon Quest, Monster Hunter, Street Fight, need for speed, outsold many of the ips on the list.
I might have missed some new IPS so please point them out if you see any that should have made the list.