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GOG is giving away Sigma Theory: Global Cold War for free! Sigma Theory: Global Cold War is a turn-based espionage simulation game with diplomacy and dynamic narrative. Check it out!
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1. Click the "Go to giveaway" green button and you will be redirected to the GOG home page
2. Scroll down until you find the game banner.
3. Click the "Get it Free" button and login into your GOG account to unlock the game.
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