In case you missed the news, Portal will be free for the Mac and PC until May 24th on Steam. Since so many people are playing this great game for the first time, we thought it’d be fun to highlight some of our favorite add-ons for the first-person puzzler.
Portal: The Flash Version Mappack
Create your own Companion Cube, Gordon Freeman, Vault-Boy, and Big Daddy with our printable origami cutouts
Aperture Science getting ready for Portal 2
Recruitment video celebrates the free release of Portal