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Causality is a puzzle game about manipulating time, altering the sequence of events and changing the outcome of each level. Set across strange and alien landscapes, help a group of stranded astronauts find a route to safety. Travel through time, work with your past selves and solve paradoxes as you take on this uniquely challenging puzzler.Each level represents a brief but hazardous moment in time. Levels are completed by guiding each astronaut to an exit that matches their colour, within a limited time frame. When all astronauts reach an exit the level is complete. Features Control time and alter the outcome of each level Work with your past selves to solve puzzles 60 Levels to complete 13 achievements to unlock

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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.

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