Valve's efforts to halt the current recession continue as the second of the four investment opportunities is released. If you can't wait for the release of http://www.trueachievements.com/Portal-2-xbox-360.htm
, Aperture Science founder Cave Johnson will sell you some robots instead.
If robots don't take your fancy, then alternatively Cave Johnson will sell you some panels
, is due to be released on April 19th, 2011 in North America, April 21st in Australia and April 22nd in Europe. The updated pre-order bonuses can be found here