You can pick only one if you want. You can do Lifetime sales, 1^st week sales, or sales by the end of the year. I’ll take a shot at lifetime Worldwide unless specified as something else. The numbers before the game's title correspond to those within the graph below

 

1.) Monster Hunter 3

2.) No More Heroes 2

3.) Trauma Team

4.) Metroid: Other M

5.) Super Mario Galaxy 2

6.) Zelda Wii (if it appears)

 

7.) New Super Mario Bros.

8.) Enclave based off of ( http://www.vgchartz.com/games/game.php?id=645 )

9.) The Grinder (if not delayed)

10.) Epic Mickey

11.) Sonic & Sega All-Stars Racing

12.) Zangeki no Reginleiv [Dynamic Slash (if localized)]

13.) Sin & Punishment 2

14.) Super Monkey Ball: Step & Roll

15.) Flip’s Twisted World [Majesco Platformer (http://vgchartz.com/games/game.php?id=34896&region=All )]

16.) Endless Ocean: Blue World

17.) Tatsunoku vs. Capcom

18.) Fragile

 

1. 1.85m	2.400k	3. 320k (20/150/150)	4. 1.6m
5. 7.25 million	6. 6.25m	7.21m by end of 2010	8. 210k
9.425k	10. 770k	11. 750k	12. 220k
13. 350k	14. 1m	15. 60k	16. 630k 17. 375k 18. 150k

Ok, default lifetime WW for me:

1) 1.6Mill
2) 500K
3)No clue
4) 1.5 Million I'm skeptical of Other M, though Metroid Prime was niche enough in the first place so it could still do ok in comparison.
5)6 Million
6)If it's 3D Zelda with improvements, 6 million. If it's more action oriented and drops much of the fat, it'll sell much more.
7)Within 2010, I'm going with... 15 million!
8)200K
9)Potential break out hit, but more likely 450K
10)1.2 Million
11)200K
12) Another possible break out hit. 1 million
13)100K
14)No clue
15)No clue
16)1.2 Mill
17)No clue
18)150K

My sales prediction:

1) 2 mill
2)700K
3) 320K
4) 2 mill
5) 7.9 mill
6) 6.5 mill

7) 12 mill
8) ???
9) 220K
10) 430K
11) 1 mill
12) 120K
13) 245K
14) 900K
15) ???
16) 270K
17) 570K
18) 190K

:p

Why not, I am bored.. These are all lifetime worldwide sales:

1) 1.75 million
2) 400k
3) 600k
4) 1.5 million
5) 7 million
6) 8 million

7) 28 million (lifetime sales, 2009 included)
8) 500k (don't know much about this one, so this is a pretty random guess)
9) 750k - 1 million (depending on the amount of advertising if any)
10) 3 million
11) 1 million
12) 1 million ( I think this could be a surprise hit, particularly in Japan)
13) 750k
14) 1.5 million
15) 500k (again, hardly know anything about this game, so I'm taking a shot in the dark)
16) 1 million
17) 800k
18) 500k (I'm hoping for a lot more but realistically it'll be lucky to hit gold status)

It'll be interesting to go back and see how accurate I was, assuming this topic still exists :)

I pretty much agree with SaviourX's numbers, except I have more faith in Endless Ocean around 850k and I believe Zelda will be done in a way to appeal to a broader audience and therefore should sell 8m at least.

And While the first Super Monkey Ball probably did about 1m it benefited greatly from being a launch title. It's just another mini-game fest now is a huge sea of mini-games. Nor is it that well know. 500k

No Red Steel 2?

That one should easily become a million seller, despite the disappointment the first one has created a few years ago... it will be a good game and will sell: i'd predict 1.5 million...

Otherwise, i'll try for the others (worldwide lifetime sales, too):

1.) Monster Hunter 3: (1 million in Japan already) 1.8 million worldwide

2.) No More Heroes 2: 700k

3.) Trauma Team: 400k

4.) Metroid: Other M: 1.2 million

5.) Super Mario Galaxy 2: 8 millions

6.) Zelda Wii: 9 millions

7.) New Super Mario Bros: 23 millions

8.) Enclave based off: ???

9.) The Grinder: 600k

10.) Epic Mickey: 2.5 millions

11.) Sonic & Sega All-Stars Racing: 4 millions

12.) Dynamic Slash: 400k

13.) Sin & Punishment 2: 300k

14.) Super Monkey Ball Step & Roll: 700k

15.) Flip’s Twisted World: 100k

16.) Endless Ocean Blue World: 800k

17.) Tatsunoku vs. Capcom: 500k

18.) Fragile: 300k

In some cases, i hope to be wrong (Sin and Punishment 2, Fragile Dreams)... but after three years of watching most Wii sales, i think i know the deal, and most of these predictions should not be too far off...

1.) Monster Hunter 3 (2.25m lifetime)

2.) No More Heroes 2 (420k lifetime) i hope it gets more sales then the first game

4.) Metroid: Other M (1.95m lifetime)

5.) Super Mario Galaxy 2 (9 million lifetime)

6.) Zelda Wii (if it appears) (7 million lifetime)
17.) Tatsunoku vs. Capcom (700k lifetime hopefully a million)
13.) Sin & Punishment 2 (400k lifetime (it has never been a million seller)
9.) The Grinder (300k lifetime hopefully more)

@Savior X: I can agree with most of your predictions, but I think you underestimate Epic Mickey, which should have more than a 1M sales, easily. Also, I agree with 68soul that Red Steel 2 should be around 1M.

) Monster Hunter 3: 500k

2.) No More Heroes 2: 200k

3.) Trauma Team: 500k

4.) Metroid: Other M: 2 million

5.) Super Mario Galaxy 2: 5 million

6.) Zelda Wii (if it appears): 6 million


7.) New Super Mario Bros.: 7 million

8.) Enclave based off of ( http://www.vgchartz.com/games/game.php?id=645 )

9.) The Grinder (if not delayed): 250k

10.) Epic Mickey: 1 million

11.) Sonic & Sega All-Stars Racing: 700k

12.) Zangeki no Reginleiv [Dynamic Slash (if localized)]: 50k

13.) Sin & Punishment 2: 200k

14.) Super Monkey Ball: Step & Roll: 500k

15.) Flip’s Twisted World: dont know

16.) Endless Ocean: Blue World: 500k

17.) Tatsunoku vs. Capcom: 100k

18.) Fragile: 70k

Q1
Super Monkey Ball: Step & Roll: 2m
Sonic & Sega All-Stars Racing: 1.2m
Endless Ocean: Blue World: 1.1m
Red Steel 2: 750k
Tatsunoku vs. Capcom: 700k
No More Heroes 2: 450k

Q2
Super Mario Galaxy 2: 9m
Monster Hunter 3: 1.8m
Metroid: Other M: 1.2m
Sin & Punishment 2: 500k
Trauma Team: 300k

Q3
Wii Relax: 20m+
Cyberbike: 5m
Epic Mickey: 2.5m
Zangeki no Reginleiv: 400k

Q4
Zelda Wii: 7.5m
Wii Waa: 4m
NBA Jam: 3.5m
The Grinder: 500k

2009
New Super Mario Bros Wii: 21m
Wii Sports Resort: 19m
Wii Fit Plus: 15m
Mario and Sonic Winter: 6m

2011
Pikmin 3: 4m
Starfox Wii: 3m
Gladiator AD: 1.2m