Semi-Collectable card game published by Steve Jackson Games.
Basic concept is simple: You are one of the Illuminati, one of the secret rulers of the world. You compete in a pitched battle against the other secret masters for nothing less than complete global domination. How you do so is completely up to you.

Will you peace and love your enemies out of commission as Shangri-La? Will you beat them into bloody pulps and feast upon their whithered corpses as The Servants of Cthulu?

It's your world. Do with it what you will.

See also the Illuminati: New World Order Limited/Unlimited Checklist