Valve kicked off a new Portal 2 trailer series today, with the first of four "investment opportunity" videos coming before launch. This edition features panels, the flexible wall, floor, and ceiling construction units that can change the layout of a room with ease.
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"Portal 2 is the best documentary-style investment opportunity game we've ever contributed to," said Valve president Gabe Newell in the announcement, "and we're confident that savvy investors will immediately see the value in these product demonstration videos."
Portal 2 -- the game, not the doomed Aperture investment -- is set to launch on PC, PlayStation 3, and Xbox 360 on April 19.