Monsters in the yard. Monsters in the house. Monsters in the hall, beating on your door. Your brother’s trapped in his treehouse, so he’s not gonna be much help. You’re going to have to get yourself out of this. But where did they come from? How are you supposed to deal with this? Well, certainly not by cowering in your room. That’s for, uh, cowards. First things first. You need to open the door.

— Activation Details —

Go to: http://store.steampowered.com/ and download STEAM client Click “Install Steam” (from the upper right corner) Install and start application, login with your Account name and Password (create one if you don’t have). Please follow these instructions to activate a new retail purchase on Steam: Launch Steam and log into your Steam account. Click the Games Menu. Choose Activate a Product on Steam… Follow the onscreen instructions to complete the process. After successful code verification go to the “MY GAMES” tab and start downloading.