Venture into a wide-open world where the most powerful tool is your imagination. Help Maxwell solve robust puzzles in seamless, free-roaming levels by summoning any object you can think of. Create your own original objects, assign unique properties, and share them with friends online using Steam Workshop – to be used in game or further modified as you like!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.