As we announced last week, the Prey demo gets an exclusive GameSpot release tomorrow at 9pm PDT, however if my conversion is correct that actually becomes Thursday 5:00 AM so most of us will have to wait another day. The demo will be released for PC download and on the Xbox Live Marketplace and will weigh in around 500MB. It will also apparently contain 5 levels and offer both single and multiplayer modes of the game.

There is a demo preview over at FiringSquad.