What games can you not live without?

Mass Effect and The Legend of Zelda series.

Probably WoW

It's hard to say... since I'm periodically shifting from games that eventually get completely worn out and are left on my shelves. I suppose at the moment... Dead Rising 2.

None. 
Maybe Streets of Rage 2. 
Maybe.

" The Legend of Zelda series. "

None. There's a lot of games that I really love, but none that I play obsessively.

Just give me Civ 5 and any version of Football manager, I'd be set for life.

None. I've stopped being obsessive about one particular franchise now.

" None. There's a lot of games that I really love, but none that I play obsessively. "

Starcraft II, and GT5 in a couple weeks...oh god, less than a month for GT5.

Tetris <3

" @TaliciaDragonsong said:

" The Legend of Zelda series. "

This + Grim Fandango and the Monkey Island games. "

It is indeed Picross 3D.

The Half-Life series, Mass Effect and Portal.

" The Half-Life series, Mass Effect and Portal. "

Kirby Super Star, Dragon Age, Persona 3.  
 
I guess I could live without them, but that wouldn't be living.
 
Runners up: Scott Pilgrim and Minecraft.

Rock Band 2 and NBA games. The 2K series specifically over the past several years.

Techno Kitten Adventure.

None, unless a paperback counts these days.....

So many. Mass Effect, Halo, Portal, Half-Life, World of Warcraft, Team Fortress 2, the list could go on forever.

Battlefield 2

A GTA game. I must have a GTA game installed!

" @KillyDarko said:

" The Half-Life series, Mass Effect and Portal. "

I'd expect you to say the Silent Hill series, considering all the awesome work you've put into the wiki pages! "

" @FancySoapsMan said:

" None. There's a lot of games that I really love, but none that I play obsessively. "

"

I think I could deal with alternating between Final fantasy's 7,8,9 & 10.

Picross 3D or Tetris.. hmm. . 
 
maybe Dead or Alive 2: Ultimate if it played better.

Tetris, TF2, and... the Fallout series.

World of Warcraft, Pokémon and Minecraft. 
 
World of Warcraft mostly, what else would I do in my spare time? There is no other game that I've found that you can sink thousands of hours into. 
 
Pokémon and Minecraft are really long lasting too but I don't know, there are no achievements in there to work on when you reach the endgame so after a while there's just nothing left to do. 

LucasArts adventure games, and Minecraft. 

Team Fortress 2

Blizzard games and action adventure games.

Lets see for one Fable: The Lost Chapters, and probably Dragon Age. I could play those games over and over again.

Crysis

Every Metal Gear