6 months away...

[BrionJames]

Morrowind, Neverwinter NIghts: Platinum, and Far Cry 2

 

[CrashBang]

Fallout 3 (that came out on PC, right? I'm not a PC gamer), Mass Effect 2, Dragon Age: Origins
For longevity, they're probably my best options

 

[Berethond]

Fallout 3, Minecraft, and Civ 5.

 

[Sightless Wisdom]

Minecaft(never played it but I'd have the time now).

Oblivion, I've already played it for at least a couple hundred hours and it's still fun.

Fallout 3 or New Vegas, They have a lot of re-playability and they are fairly long to start with.

Also, Fallouts and Oblivions can be modded beyond belief, so they would never get old.

 

[Yureina]

Fallout 3, Europa Universalis 3, and some yummy RPG i've not played yet, like Mass Effect 1 or 2.

I could last quite a while, I think.

 

[Okuu_Fusion]

Fallout 3 (and if you count New Vegas as a expansion, than throw that in)
Touhoumon Emerald
Oblivion w/ all expansions...

 

[Les Awesome]

sims 3
oblivion GOTY
fallout GOTY
hooray i'd last the longest

 

[Buizel91]

Starwars Galactic Battle Grounds...Starwars the best of PC (hehe i cheated =3 ) and Lord of the Rings Battle for Middle Earth 1

 

[Buizel91]

sims 3
oblivion GOTY
fallout GOTY
hooray i'd last the longest

Not on my watch bub... ;D

 

[Sleekgiant]

Autism the game(Minecraft)Bad joke But Minecraft
Fallout New Vegas and Fallout 3

 

[Thundero13]

Plants vs. Zonmbies
Minecraft (I haven't played it but it sounds good}
The Sims 3

 

[Omikron009]

Minecraft.
Civilization 5.
Fallout New Vegas.

 

[C95J]

That's a pretty good prison! Free computer!

Also, probably

1. Civ 5
2. Fallout: New Vegas
3. Minecraft (If you can play it without the internet. If not, then L4D2).

 

[C95J]

Minecraft.
Civilization 5.
Fallout New Vegas.

Awesome! This guy above me put the same options! Great minds think alike

 

[Sexual Harassment Panda]

Max Payne 2 - Best game ever made.
Rome: Total War - Offers great longevity.
NBA 2k11 - Crazy addictive.

 

[Sir-jackington]

Sims 2 or 3 (i don't care)
Command & Conquer Generals
and
oh this is kinda hard
either Sid Meier's Alpha Centauri or an emulator with Final Fantasy VIII
probably
....
hmmmmm
.....
Final Fantasy because it would last longer...i think

 

[Kpt._Rob]

Minecraft, Oblivion, and Ghost Master

 

[Amphoteric]

Minecraft-The biggest time sink in the history of mankind.
Fallout 3- With the GECK of course, Its been 2 years and i'm still playing this game
Rome total war

 

[Drop_D-Bombshell]

Oblivion
GMod
Portal

All i need for 6 months.

 

[tomtom94]

Timesplitters Future Perfect (I would hack it to be PC compatible)
Pro Evolution Soccer (whichever one is most recent)
Football Manager (see above)