Feel that gravitational pull on your wallet? Yep, Portal 2 is now available for pre-order on Steam. As part of Valve’s dual-incentive offer, early bird purchasers get 10 percent off the original purchase price of $49.99, along with a free giftable copy of the original Portal.

“Portal 2 is shaping up to be the most innovative title in Valve’s history, and to be a much larger experience than we originally planned,” said Doug Lombardi, vice president of marketing at Valve. “As such, we are aggressively promoting the title with more retail promotions than we have put behind any prior release.”

Portal 2 hits PC, PS3, and Xbox 360 in April.

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