A short tutorial on how to hack any Android game out there using file explorers and hacking your money, gems ect, find your favorite offline games data directory under root/data/data/APPNAME and how to find hackable files and databases.
Many file explorers allow you to hack savegame files, databases and game files, which is extremely useful for cheating in a lot of mobile games.
Root Explorer APK: https://www.google.com/?q=root+explorer+apk
For editing databases use either an app from the appstore of use this one for PC:
DB Browser for SQLite: http://sqlitebrowser.org/
This is an advanced tutorial and requires some experience with rooted phones and emulators. Learn first: