McPixel is a save-the-day guy that you guide through 100 short challenges in an old-school point'n'click fashion. The goal in each challenge is to prevent stuff from blowing up using available tools! You have only 20 seconds to save the day! Think quick!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.