How to change the game board size
You can select a field size at the start of the application.
Select one of the grid sizes:
a 8 × 8 board with 10 mines
a 16 × 16 board with 40 mines
a 30 × 16 board with 99 mines
a custom board, where you chose the size and the number of mines
To change the board size later, press the Change Difficulty button on the right.