put usb in
PLUGITIN
You will have to install a mod which they will further explain on the download page
You need steam to install Portal 2 Why not? It's free
Yes
Usually the power supply.
If the computer is invovled, it is a dealer install only.
I assume you are talking about Skylanders. The game comes with instructions that tell you how, but I will tell you anyway. Once you have the batteries put into the portal, unplug the USB from the portal and put it into the back of your game system. Then press the little black button on the inside of the portal and the black button on the USB. Next, screw the battery compartment shut and press the power button on the outside of the portal. You may need to press and hold, but the LED lights on the portal will flash and turn on and you can now start the game.
Portal or Portal 2 mods on Steam is installed by first Downloading it and extracting it. Then copy the map file into your Portal 2 maps folder which is Run the game.
The twilight forest is a mod. It was never in the game that Mojang made
Glados
you need to by the starter pack. you cant download the portal of power
do you have to pay to install on your computer