Portal is Free Trailer [HD] Developer: Valve Release: Now Genre: FPS Platform: Mac/PC Publisher: Valve Website: www.valvesoftware.com Yesterday, millions of new recruits poured into the Aperture Science Enrichment Center for Portal testing. If they are ever found, we are sure they would want you to know that the wheels of science turn ever onward. Today, in an effort to restaff, Aperture Science directs your attention to this motivational recruitment video. Follow Machinima on Twitter! Machinima twitter.com Inside Gaming twitter.com Machinima Respawn twitter.com Machinima Entertainment, Technology, Culture twitter.com FOR MORE MACHINIMA, GO TO: www.youtube.com FOR MORE GAMEPLAY, GO TO: www.youtube.com FOR MORE SPORTS GAMEPLAY, GO TO: www.youtube.com TAGS: Portal is Free on Mac Trailer [HD] machinima videogame video game xbox 360 xbox360 microsoft pc windows apple mac steam download fps first person shooter left 4 dead 2 l4d2 l4d half life team fortress new exclusive valve yt:quality=high