new XCOM strategy title? Maybe you've never heard of X-COM before and want to see what all the fuss is about? Perhaps you're confused because the original games were called "X-COM" and the new ones are called "XCOM"?
Steam has you covered on the first two fronts, at least. Today only, the download service is offering all five of the original X-COM titles for a paltry $5.09. Alternately, if you're really trying to forget X-COM: Enforcer, you can pick up individual titles at $1.69 a pop.