Lately I've come across some threads that have shown how development houses have done thus far on the different systems. So I thought it would be interesting to go and look at Sega in particular (because they're the most awesomest). So here's how they've done so far, in regards to game sales for DS, PSP, 360, PS3, and Wii.
Sega's Million Sellers
1. Mario & Sonic at the Olympic Games (7.18 million)
2. Mario & Sonic at the Olympic Games (4.44 million)
3. Sonic Rush (2.90 million)
4. Sega SuperStars Tennis (2.31 million)
5. Sonic & the Secret Rings (2.06 million)
6. Super Monkey Ball: Banana Blitz (1.27 million)
7. The House of the Dead 2 & 3 Return (1.07 million)
8. Sonic Unleashed (1.02 million)
9. Love and Berry DS Collection (1.01 million)
10. Sonic Rivals (.94 million) Missing Others Data
11. Sonic Rush Adventure (.47 million) Missing Others Data
Well, that's all of Sega's million sellers thus far on the current generation platforms (although there are a couple of games, like Sonic Rush Adventure and Sonic Rivals, which are missing data that would send them over the million mark). Pretty interesting to see Nintendo owners support Sega in such a way, even to the point where Sega has had its most successful game ever (Mario & Sonic on Wii) on a Nintendo system. Expect another million seller soon (er... make that two) with the new Winter Games. As a Genesis fan back in the day, I still can't get over what a 180 Nintendo-Sega relations have become.
Speaking of the Olympics, PS3's most successuful Sega game is Beijing Olympics (.68 million) and it's Sega's #2 on 360 (.59 million) behind SuperStars Tennis (which was heavily bundled for a while). In fact, Sega has had more success with the PSP than the PS3 when it comes to big game sales. Sonic Rivals (.94 million without Others data) and Phantasy Star Portable (.77 million) are just some of the games on PSP that Sega has had success with.
So, I'd say that as far as developers go, Sega has definitely had some major successes this generation. Even Sonic is seeing some big sales, despite some gamers calling for his retirement. So I'd say that Sega is doing great, and that makes me a happy panda. 
Sega's Great Games (Just a taste!)
Wii

DS

360

PS3


PSP

Sega's Upcoming Games (Just a taste!)
& Project Needlemouse!












