LANDKA® recently released OVERPAINT, an elegant artistic puzzler all about color and how it amazingly meshes. It is currently available for iPad, iPhone, Mac, Android, Windows Phone and Kindle.
The goal sounds simple - overlap panels of primary colors to clear circles. But as the circles start to move in more complex patterns, it becomes more challenging. There's no time limit, only a limit on moves per level. There are no ads, and premium content is optionally available.
Available in English, Simplified Chinese, Japanese, Spanish and Portuguese.
This game is beautiful and engaging. My kids liked the easier levels, and I really enjoyed the challenge as it moved up! You can watch the trailer to see more.