The program file name
"MineSweeper" game. KolibriOS 0.7.7.0 contains it.
Aim and rules of the game
About the rules of this game read here: 
Press a big grey button over the game field to start a new game
To change game field size press a little green button in the upper left corner of the window.
To open a tile, click it by the left mouse button.
To mark a tile by a flag, click it by the right mouse button.