Sapper is a free puzzle game developed by Марат Аскаров for AndroidThe game challenges players to find the hidden mines in a grid-based field. The game includes four modes, each with a different number of cells and bombs. In the Beginner mode, the grid contains 10x10 cells with 10 bombs. The Amateur mode features a 16x12 cell grid with 25 bombs, while Pro mode has an 18x14 cell grid with 40 bombs. The Extended mode allows players to choose the number of cells and bombs themselves.

The objective of the game is to identify the position of the hidden mines by revealing the cells that do not contain them. The game features a flagging system that allows players to mark the cells that they believe contain mines. The game ends when all the mines are found, or when a mine is revealed, leading to a game over. Overall, Sapper is an engaging game that tests players' problem-solving and strategic thinking skills.