This review was originally published 05/15/2011 on Game Observer (now defunct as of 05/13/2014). It has been republished here for archival purposes.
Yes GladOS, we brought you back to life because we really do love to test!
To be perfectly honest, I wasn’t looking forward to this game. I love the first Portal, as it was about as close to "perfect" as any game has ever come, but I couldn’t help but fear that Valve might turn this into a franchise, and in doing so, some of the allure of the game would be lost. But the game was released, and it is a triumph. Mostly.
Apparently, a very long time has passed since the first game. The Enrichment Center is very different. Under the care of the watchful AI, Wheatley, the entire facility has been slowly falling apart. The degrading, decrepit test chambers make for much more interesting visuals than the sterile, white and gray chambers of the first game. They are now overgrown with weeds and vines, panels are falling off the walls, broken glass litters the floors, and fallen and bent metal beams and girders obstruct some of your paths. It’s just too bad that with all the debris and vegetation littering the environment, that none of it is interactive. It slightly breaks the immersion when you walk through dangling leaves and they don’t react to your passing at all.
There is a lot of visual variety in this game. You travel through the dilapidated chambers of the early game until the facility begins to rebuild itself. You watch it piece itself back together. Then you get to travel through the deepest guts of Aperture Science. And finally, you come back to see the test chambers tear themselves apart again
The co-op puzzles are fun, but not terribly replayable.