If you are looking for good strategy with low cost and system requirements, check out Civilization 2, Alpha Centauri, or Civilization 3, all by Sid Meier. Civ2 is a classic, but dated. Alpha Centauri was the next best "Civ" game, and Civ3 I hear if funktastic (if you're into strategy games). Civ2 can be picked up at Fry's or Target or anyplace with a $10 bin, and I got Civ3 for $10 at Office Maxx six months ago