The one from Steam is better... I was disappointed... :(
this game is fun.
Can someone tell me how to get passed the 15th level?
its-a me mario and i like it
The cake is a lie!
I cheated all the way to the end!LOL
I like the first one but its hard
where am i?
I LOVE ALL PORTAL GAMES!!!
im stuck on part 15 >=( but I still like it because steam on the REAL portal 2 is mean so I play this on (I HATE STEAM) (steam is a network like abole flash drive and stuff)