Match two of the same tiles to remove them from the board.
You can only match two free tiles - a tile is considered free if it is not covered by any other tile.
When starting a game, choose a layout, note that there are 5 different pages with layouts.
Here is a short description of the game buttons:
Pause the game
Back to main menu.
Visit the developer's website.
Undo one move, 20 points will be deducted.
Re-shuffle the board, 80 points will be deducted.
Show hint - 50 points will be deducted.
Restart the game.