the right number

A fun, addictive and a very simple game. HOW TO PLAY: -At first, the game chooses a random number (the target). -You will start with the number 0 (the result). -You need to add or subtract the random number that will appear on the top of the screen to make your number (the result) equal to the target. -You can also multiply your number or divide it by 2. The game has 6 levels : -Level 1 : the target is X ± 50 ( x is a random number) (example :if the target is 1450 ± 50 , you win if your number (the result) is any number between 1400 and 1500) -Level 2 : the target is X ± 30 -Level 3 : the target is X ± 20 -Level 4 : the target is X ± 10 -Level 5 : the target is X ± 5 -Level 6 : the target is X ± 000 ( you must get the exact number) good luck :D update : unnecessary permissions removed (geolocation, ... )