Simply post the games you beat for the first time this year (they don't have to be games that came out in 2010) and then post your top 5 out of the ones you listed. I'll get us started.
This year I beat:
Alpha Protocol
Altered Beast
Batman: Arkham Asylum
Bioshock
Bioshock 2
Call of Duty: Modern Warfare: Reflex Edition
Dead Space
Gears of War
Kirby's Adventure
Mass Effect
New Super Mario Bros. Wii
Pokemon Platinum
Pokemon Snap
Prince of Persia
Sonic the Hedgehog
Sonic the Hedgehog 4: Episode 1
Super Mario Galaxy 2
Super Mario Sunshine
Wario Land: Shake It!
Yoshi's Island: Super Mario Advance 3
Top 5:
#5
I beat this game a couple weeks ago. Rough around the edges, but the game is still fun to play and has a great story with likable characters. Very underrated.
Gamerankings average: 73.20%
#4
Just beat this game last night. Couldn't decide whether I wanted to put Super Mario Sunshine here or this game. In the end, I looked at replay value and I'm willing to wager that I will be coming back to this game a whole lot sooner than Sunshine. Really well polished by Nintendo with a lot of great levels.
Gamerankings average: 97.07%
#3
Got this game on sale, wasn't sure what to expect. Extremely fun game with a great settings. Lots of work was put into this game and it shows. The Mass Effect universe is one I look forward to exploring more in the newer games.
Gamerankings average: 89.43%
#2
This game is great, combat is fluid and simple, yet complex at the same time. I loved solving all the riddles and unlocking tidbits of information about the Batman universe. This game cemented Batman as my favorite hero. Top notch game.
Gamerankings average: 92.72%
#1
I know what you're thinking, "Benoit that game came out in 2007, what took you so long?" To be honest, I started this game about 2 years ago and couldn't get into. I let the game sit on the shelf, unattended for about a year and a half until I tried it out again earlier this year. Boy am I glad I gave this game a second chance; it is quite possibly my favorite game now. The atmosphere is absolutely chilling in the beginning, but the further along you get the more capable you feel of doing the tasks you are required to do. The story is probably my favorite from any video game; great execution with an awesome plot twist. The ending was beautifully done. Truly one of the best games I have ever played.
Gamerankings average: 94.44%
This year I beat:
Alpha Protocol
Altered Beast
Batman: Arkham Asylum
Bioshock
Bioshock 2
Call of Duty: Modern Warfare: Reflex Edition
Dead Space
Gears of War
Kirby's Adventure
Mass Effect
New Super Mario Bros. Wii
Pokemon Platinum
Pokemon Snap
Prince of Persia
Sonic the Hedgehog
Sonic the Hedgehog 4: Episode 1
Super Mario Galaxy 2
Super Mario Sunshine
Wario Land: Shake It!
Yoshi's Island: Super Mario Advance 3
Top 5:
#5

I beat this game a couple weeks ago. Rough around the edges, but the game is still fun to play and has a great story with likable characters. Very underrated.
Gamerankings average: 73.20%
#4

Just beat this game last night. Couldn't decide whether I wanted to put Super Mario Sunshine here or this game. In the end, I looked at replay value and I'm willing to wager that I will be coming back to this game a whole lot sooner than Sunshine. Really well polished by Nintendo with a lot of great levels.
Gamerankings average: 97.07%
#3

Got this game on sale, wasn't sure what to expect. Extremely fun game with a great settings. Lots of work was put into this game and it shows. The Mass Effect universe is one I look forward to exploring more in the newer games.
Gamerankings average: 89.43%
#2

This game is great, combat is fluid and simple, yet complex at the same time. I loved solving all the riddles and unlocking tidbits of information about the Batman universe. This game cemented Batman as my favorite hero. Top notch game.
Gamerankings average: 92.72%
#1

I know what you're thinking, "Benoit that game came out in 2007, what took you so long?" To be honest, I started this game about 2 years ago and couldn't get into. I let the game sit on the shelf, unattended for about a year and a half until I tried it out again earlier this year. Boy am I glad I gave this game a second chance; it is quite possibly my favorite game now. The atmosphere is absolutely chilling in the beginning, but the further along you get the more capable you feel of doing the tasks you are required to do. The story is probably my favorite from any video game; great execution with an awesome plot twist. The ending was beautifully done. Truly one of the best games I have ever played.
Gamerankings average: 94.44%