FREE: Secrets of Rætikon [Steam Key]

The listing, Secrets of Rætikon [Steam Key] has ended.

Ruthless bird versus bird action. Wild animals and the artefacts of a mysterious ancient culture. A game full of challenge and discovery – unlike anything you've played before.
Secrets of Raetikon
You find yourself alone in the mountains of the Alps. Discover strange contraptions, wild animals and the mysteries of an ancient culture. Uncover the Secrets of Rætikon in an atmospheric, open-world 2D game in which you fly like a bird and explore an uncharted world.

Secrets of Rætikon is an action-focussed exploration game with an open world. Fly through the savage mountains of the Alps and collect parts of ancient machines. The world is rich in interactivity. Trees, rocks, plants and animals – everything is physics based and can be grabbed and dragged around.

Hostile animals protect their habitats and interact with you as well as each other. Use this ecosystem to your advantage: drag a bird of prey to another predator and they attack each other; grab a robin and feed it to a buzzard – it will attack the poor bird instead of you; defend yourself by wielding spiked plants or by pushing foes into thornbushes.

More info: http://store.steampowered.com/app/246680/
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This game works on mac and linux too!

Good Luck!