Portal is higher quality than other platforms, but no sequel for PC gamers.
27 February 2013
Summary: We own this game on Wii and PC, as well as the iPad variants, and would prefer to purchase the sequel for PC just to have another PC portal since the Wii Portal is just junk, BUT IT APPEARS ACTIVISION WILL NOT BE RELEASING GIANTS FOR PC, or properly for IOS or Android(IMHO, their mobile games are needlessly stunted).
Summary: We bought the PC version only to find out when looking at the box when it arrived that the it is keyboard only, no controller. We immediately returned it and got the wii version. Much better. However, if you buy the PC version be prepared to only use the keyboard.