Quetzalcoatl by 1Button SARL is Apple’s free app of the week. The game normally retails for $2.29 and is free for this week only.
The challenging puzzle game allows you to push your mind to its limits with 180 creatively designed puzzles. The developers promise dozens of hours of gameplay.
Here is the video trailer of the app:
Quetzalcoatl is available as a free download (normally $2.29) from the App Store. The game requires any device running iOS 7.0 or later, and it has been optimized for the iPhone 5, 6, and 6 Plus. The app has in-app purchases that cost around $1.19.