There's an Exclusive Alien Crossfire Demo on Gamecenter that offers a playable demo for this add-on for Sid Meier's Alpha Centauri. The archive is about 24 MB. Also, there's a Nightlong Demo on PC.IGN.com with a 36.5 MB playable demo of this puzzle game they say will "remind you of nothing so much as Blade Runner" in the only post I have ever seen to use the phrase "the Mexican click dance" to refer to a hyperlink. Thanks Ant.