Portal 2 available to pre-order on Steam

Portal free plus 10 percent off on Steam for pre-orders

Valve has announced that Portal 2 is now available to pre-order on the PC and Mac via Steam.

The bonuses for pre-ordering Portal 2 will vary from retailer to retailer but on Steam those that pre-order will get 10 percent off the full price of the game and a free copy of the original Portal.

Over Steam Valve are also offering an extra 10 percent discount on Portal 2 for anyone who wants to buy an extra copy to gift to a friend.

Portal 2 will materialise on the PlayStation 3, Mac and PC with full Steamworks support and the Xbox 360 on April the 18th.

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