Crank up the fun, break out the Champagne and fire off your corks to usher in the New Year! Celebrate with explosive new elements and daring experiments. Use disco balls to deflect laser beams, ignite hopping frog bombs, and set off chains of firecrackers to build the craziest “Rube Goldberg” style contraptions ever.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.