Basically, you can find the apk, data or obb of the games from here but in order to play the games, you must install it properly or it will not works.
So, there are three types of files which are apk, data and obb.
To install apk, just open it and click install then it will install automatically. It is the easiest way to install among the others. Take note that you must check the unknown sources in settings for the apk to install. If you see there is only apk file for that game then just install it and play. You can refer images below to install apk.
For some other games, you need to install data or obb for it to run if there are data or obb files!
To install data or obb, the process is the same but the path is different. You just need to extract it to the correct path and done.
Password: alberttanjh
For obb, the correct path is Android/obb and for data, the correct path is Android/data.
Note: Always read the installation steps at the bottom of that game because the installation is different for some old games!
Please watch this video below if you still cannot understand, hope it may helps you in anyway.
