If you are playing Mortal Kombat X on Android, then it is useful to tell you this method. Because green stones are extremely expensive in this game. When you try to get random characters, if the characters you want do not appear, you will have to accumulate stones for a long time. Otherwise you have to pay high fees and buy stones. In order not to wait and get the character you want without spending money, if you apply the following method completely, you can get your character without spending stones in a few tries.

First, enter the game. Turn off your internet when the game opens.
When the internet is off, enter the store and buy one of the packages that come out with a random card for green stone.
If the character you want is out, there is no problem, but if the character you do not like came across, then immediately press the menu button and go to the main menu without adding the character. Close the game.
Enter the Internet from the settings in the applications. Find Mortal Kombat X there and say clear the data. Do not make a mistake and delete the game.
When you say clear data, open your internet and enter the game again. You will see that your stones remain in the same number.
In this way, you can have the character you want without spending your stones. Before I forget, I would like to say that this method only works on Android.