Bundle Stars and Pcgamer are giving away One million Steam keys of Spacechem.
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http://www.youtube.com/watch?feature=player_embedded&v=Gk8JwvtVs38
A total of 1,000,000 Steam keys are available for SpaceChem, which must be claimed by 17:00 GMT on 2 July 2014. The offer is open to owners of eligible Steam accounts. By taking part in this giveaway you agree to be bound by these terms and conditions and the further rules which can be viewed at http://www.futuretcs.com.