Civ3. Especially on the higher levels. Even with animation off, the turns get LOOOONG, and I start thinking, “Well, I’ll go to sleep when I’m done building X or discovering Y or capturing Z.” Then my alarm goes off and I slowly, tiredly walk from PC to shower to go to work.
Deus Ex before that. Sweet God on a saltine, that had me going. I forget who it exactloy was that found me (Proteus sounds right), but I was playing at around 2:30 in the morning when I hack that terminal and it says “Proteus found you! Proteus found you! Run while you can! Run while you can!” let’s just say that I needed lots of coffee to get through the following workday.
SimCity 3000 Unlimited was SO DAMN FRUSTRATING. “I’ll play until I stop losing money.” That means you’ll never stop playing.
And the first game that I just coulnd’t stop was Fallout 2. I loved that game. It should have won more awards, and those layabouts at Black Isle had better get moving on “Van Buren.” I recommend this game to anyone. You can probably get it for 10 bucks right now, and its witty, non-linear, personality-designable gameplay makes it fun. It’s essentially a voyage of discovery, and I just wanted to explore and explore. I was actually pissed when the game ended, I was having so much fun.