Half Life 2. Thank gawd for Steam's high flexibility, I practically have 2 times the system it requires, yet I can't play Gothic 3 or NWN 2 or anything new.
It's hard as heck to survive these days without G3 … hell, I can't even bare to scroll down to the point where you can see the title of the most recently posted-in thread of the G3 forum, or NWN 2 for that matter.
And things aren't getting better. No money = buh bye 1 GB, helooo oldies. Might as well load up Zork, but I'm 99% sure it'll lag