The gameplay is simple: on the screen several boxes in the colors blue, red and green spread. The aim is to get all the red out of the game, while all green must remain on the Schrim. To achieve this, may / must some of the blue boxes are destroyed by simply tapping. Once a red or green box "hangs in the air," she falls to the ground.
So far so simple. However, the whole is quickly tricky, because the boxes are sometimes different in size, which is then exploit. Or the boxes do not fall down, but (to recognize the line of sight of the face on the respective box) to the left or right. Or you have to leave two boxes at the same time fall so they stopping in traps each other and so avoid the crash. In addition, one is in some levels under enormous time pressure, since moving blue platforms, or because "round boxes" rolling towards the abyss.
From level to level you have more and more to think ahead: what happens if I take away this or that box? In what order should I do it? Can I knock over another with a falling box? A reasonably realistic physics engine ensures puzzle fun for a lot.
The app fully focused on the game itself. The graphics are absolutely minimalist, as the sound effects. Background music does not exist. Only language in the game is in English, which can not change, but is not bad, as the game can be operated intuitively.
The game requires no permissions (exemplary!) And very little disk space. It is also one of the few absolutely apps that have their own EXIT button.
This game is one of the best puzzle apps that I've ever found in the Amazon App Store. An absolute buy recommendation!