2048 New with Challenge Mode

We have three modes
1) Beginner level - you are new to 2048 then this is right choice we have a Undo option , you can use it any number of times .
2)Classic Mode - try to get 2048 tile
3) Challenge Mode - Delays in movements will increase the water level , faster moves decreases water level , so its more interesting for folks who already finished 2048 . we have three stages to make it more interesting