Shortly after Portal (the great almighty Portal, which makes me want to throw my objectivism into the deep sea and sing hymns of joy instead) hit the shelves in October 2007, it was announced that there is a flash version of the game available in 2D which everybody kind of seemed to like pretty much.

Actually, everybody seems to have liked it that much that the creative minds behind it had enough motivation left to convert all their maps into 3D. And by now they have finished with this act of humanity for all "Portal"-fans out there. So, here you have it: 40 new maps for Portal, available as a free download. Of course, you will need to have Steam with Half-Life 2 and Portal installed on your PC. But if you have, there are approximately three and a half hours of new puzzling and mind-gobbling thinking with portals waiting for you.

However: I can't promise you that there will be cake at the end.
The confectioners seem to be on strike. Or, you know: probably GLaDOS just killed them.