Kropki Puzzle is a free puzzle game developed by Aliaksandr Uvarau for Android users. The game consists of filling the playing field with numbers while meeting certain conditions. The objective is to ensure that each row and column has unique numbers. The game also includes white and black dots that indicate whether the numbers in the adjacent cells differ by one or half, respectively. All the possible dots on the field are already exposed. For players' convenience, more than one number can be inserted in a cell, and the incorrect ones can be removed later. The game has six difficulty levels, and the first level on the 4x4 difficulty is recommended for beginners.