Most of the games and apps that are paid on playstore can be downloaded from external source without paying for them,but the problem starts when the app checks the license and finds it cracked,because of which the app gets closed and you cannot use it anymore,but now you can...

#NOTE
ROOT IS NEEDED TO PERFORM THIS OPERATION.

STEPS

1.Download lucky patcher.
DOWNLOAD LINK: http://www.mediafire.com/?25cndumha5s69l1

2.Install lucky patcher and accept the superuser prompt and open it

3.Inside lucky patcher select the application you want to patch and select open menu of pakages

4.Select remove license verification

5.Open the app that you just patched

#NOTE
Always patch the application on its first run cause their is a possiblity that the app might not run after its license verification is failed.