Turn the crank, rotate the gears, push the levers, Use the catapult, explode it, or fly it…From grilling sausages with a pulley, gears, rubberbands and a candle to firing a cannon with a basketball, these wacky brain-teasers will light up your imagination with creative and addictive fun.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.