Portal: The Flash Version

Here's a free flash game based on Valve's Portal from the Orange Box collection. It has a lot of similar game play because its based on the same conceptual hook except its a 2d platformer instead of 3d. The object is to safely guide your avatar to the exit of 40 rooms, some of which are fiendishly tricky to figure out, others just require precision platforming skills. Enjoy:
http://www.newgrounds.com/portal/view/404612
http://portal.wecreatestuff.com/