10 to 20 Hours
The Bottom Line:
Works great with a Geforce 8800 GTX, but it'll run on a Geforce 7800 GTX. I particularly liked that you can see the exact armor and weapons on your opponents and, after you killed them. Fighting a hard opponent is rewarding because everything drops for looting.
Titan Quest (and its expansion) has no deep background - except lots of excellent Mythology (correctly told for once).
There is no "official 20-sided dice" getting thrown somewhere in the background - but do you really care? Hack, slash, zap, burn and destroy. Loot, sell, buy and equip. Repeat as needed.
Stable when Iron Lore went bankrupt unlike Hellgate: London for example. It's flagship's fault. I admit that unlike Hellgate London, it wasn't a stupid game purchase. It beat Disciples II in gameplay and it looked better. This game is on par with Dungeon Siege II.