Minesweeper

Minesweeper, detect all hidden bombs.
Game area split into many blocks. A block may has mine, or maybe empty.
You need detect all mines, and mark the block. When all bombs are marked, you win!

Top info area:
+ Left top title text is time you spent by the second.
+ Right top title text is mine number left you haven't detected not yet.

Set block numbers:
+ Set block row count and column count
+ Choose game level to set mine numbers
+ Click top right bomb icon to define bomb number

Detect mine:
+ Long press block mark mine block with "L"
+ Click bottom bomb icon, then click block to mark mine block
+ "empty" --> "L" --> "?" --> "empty"

Settings:
+ Set background color, title color and button color