Tower defense game Defense Grid: The Awakening is free for a limited time on the Epic Games Store. The game normally costs 7.99 euro. You only have 24 hours to grab it for free. The offer ends tomorrow, December 21.
To get the game, just go to the Defense Grid: The Awakening page on the Epic Games Store, and click the "GET" button. Once you get the game, it will be yours forever.