Some of these are hard, some are easy. Personally I can't get 3C at all. Just have no clue. Maybe one of you can figure it out.
Here are the answers I came up with. I don't have an answer key so some of these could very well be wrong. Also I have no idea at all what 3C is.
A column
1A Endless Ocean
2A Left4Dead
3A Killer 7
4A Space Invaders
5A Mega Man
6A Dance Dance Revolution
B column
1B Twisted metal
2B Myst
3B Scribblenaughts
4B Elite Beat Agents
5B Orange Box
6B Fallout
C column
1C Half-Life
2C Saints Row
3C ***I don't know this one***
4C Assassin's Creed
5C Little Big Planet
6C Rainbow Six
D column
1D Halo
2D Lost in Blue
3D Angry Birds
4D Golden Axe
5D Double Dragon
6D Silent Hill
E column
1E Wii Sports
2E Area 51
3E Q-bert
4E Dead Rising
5E Ultima Online
6E Neverwinter Nights
F column
1F Odin Sphere
2F Altered Beast
3F Chrono Cross
4F Star Ocean 2
5F Pirates
6F FZero