If you never had a chance to pick up MicroProse's X-COM titles back in the 90's, you may want to jump at the chance to buy them all (X-COM: UFO Defense, X-COM: Terror From the Deep, X-COM: Apocalypse, X-COM: Interceptor, and X-COM: Enforcer) for the amazingly low price of $13.49 on Valve's Steam service. While they're all typically considered strategy titles, the earlier games in the series actually had a nice infusion of RPG elements.