Portal - The Flash Version!
 

That's right, folks. Some bright spark has taken the concept of Half Life: Portal, and turned it into a flash game!

http://www.newgrounds.com/portal/view/404612

For those who haven't a clue what to do, watch this short tutorial (made by Valve):

http://www.youtube.com/watch?v=QpdCi5XpCsE

There are 40 levels. Some are beasts, some are simple.

Enjoy!

Stumbled across this the other night while "working on my paper." Quite an addictive little game. Made it to level 29 or so before I realized I actually needed to work on my paper. Good stuff.