Bound together by accident, the two characters Bismo and Plom can exchange their size and abilities at will. The world and its challenges revolve around this “shifting” mechanic, forcing the two players to work together (and occasionally stab each other in the back). Together you explore the different themed stages, solve puzzles and fight over precious coins. Coordination and communication are key for a successful journey. Shift Happens is best enjoyed on a couch with a good friend and a pizza. We recommend using gamepads for maximum enjoyability™. The singleplayer mode was added due to popular demand and adds more levels to play. Although the game is primarily meant to be played by two people, you can play the completely different singleplayer levels without another person. Features over 40 levels of handcrafted fun local and online co-op gameplay challenge and arena levels for more replayability and short game sessions extra challenges in the levels for completionists and explorers more than 30 different levels designed for the singleplayer mode

— 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.