Cloud Tiles

Cloud Tiles - a sliding picture puzzle built on an airfield scene, where a view of a control tower, a hangar and a runway is cut into square tiles laid out on a grid with one cell left empty. A tap on any tile next to the empty cell slides that tile into the gap, and the round is over when every piece stands in its original place. The move counter above the field grows with each slide, and a small preview of the finished picture sits next to it, so the target layout stays visible during the whole round. Three difficulty levels set the size of the grid - three by three, four by four and five by five - and the chosen size applies from the next round. The result panel opens as soon as the picture is restored and shows up to three stars, the number of moves that were used and the points collected for the round, and a shorter run of moves leaves more stars and more points. Points go into three upgrades: extra undo steps available during a round, a wider move allowance before a star is lost, and a higher rate of points for a solved board. Each upgrade has five levels, its cost grows with every level, and a new level applies from the next round. The pause panel freezes the field and holds three actions - continue the round, start it again from a fresh layout, or return to the menu. The settings panel keeps vibration and visual effects on or off, switches the grid size, shows the best result for the current size with a reset next to it, and clears all collected points and upgrade levels. The best result, the points, the upgrade levels and every setting are kept on the device and stay between sessions, and a separate guide screen lays out the rules of the round.