It has a user friendly puzzle UI with green background.
Play with sound.
Unlimited number of puzzle boards for beginners, every time you play a new game, the game puzzle would be a newly different from previous puzzles.
It also has 'Hint' function when you feel stuck in the puzzle.
When you are interrupted in a game, just click 'Stop' and then 'Continue' when you are back. It will store board state perfectly.
Very simple to play and enjoy it anytime, anywhere!