But later on new elements are given to you such as a light bridge which can be used as a walkway or a shield against turrets while allowing you to fire portals and lasers through it.
The portal gun is your staple throughout the game with it starting out as a blue portal gun before later getting the blue and orange full version. The gameplay uses the same portal concepts as well as bringing some exciting new elements to gameplay later in the story/ co-op. Later on the sterile test labs of the previous game make an appearance before another change of scenery brings you to an early Aperture Science testing facility deep in the bowels of the testing facility. Environments start with broken and dirty, nature reclaimed test labs before seeing labs and debris being repaired as you wonder through the environments. The graphics in the sequel stands above the first with its added polish to the source engine and more varied environments. Spoilers avoided the story carries on to take you to a few new locations including visiting older test labs for other experiments and some more test chambers as well as a few areas which explore the history of Aperture Science and its founder Cave Johnson (voiced by J. After making your way through the first few test chambers you enter GLaDOS’ chamber where she is lying on the floor broken. To then fall out of your broken room to find yourself in an old testing chamber now overgrown with plants with panels broken and dirty from lack of maintenance.
Wheatley starts to move your room upon which it starts to collapse. He has decided that it’s time to escape the Aperture Science Facility and enlists Chell’s help with the break out. A knock on the door leads to meeting Wheatley (voiced by Stephen Merchant) a new AI whose task is to look after the human test subjects. You then go back to bed and sleep until you are woken up again to meet the same room aged and dirty with a new greeting from the computer. The single player starts with you waking up from suspended animation to calibrate settings with the standard look up and down by direction of a computers voice.
You take control of Chell again for the solo campaign while in Co-op you take control of one of two robots. While portal was released 3 times: in the orange box, as a standalone title and on Xbox Live Arcade Portal 2 has just seen its release on PC via Steam (as well as PS3), PS3 and Xbox 360 (published by EA for retail). Portal 2 is the sequel to Valve’s 2007 hit title Portal.