If you're looking for a new game to add to your smartphone roaster, the Zirkel puzzle apps might be just what you're looking for. The games challenge the user's skill and brain power with over 70 different puzzles that need to be solved.
The Zirkel app is all about measuring distance and perfecting timing. The game features various circles that are tied to a rotating flame. Users have to time the speed of the moving flame to help you pinpoint when the flames from various circles will sink up. In the beginning there are guidelines to help but as you progress in level difficulty, the lines disappear. The Zirkel app has a celestial design with a starry background that is reminiscent of space.