Note: for playing challenge online need a real account, so I'll add unsigned mod soon for root-devices (Read this from the modder)
This mod don't have unsigned apk,so play it with only guest account cos this game only for ROOT user
its ok, i already found out how to play online with the mod. its very easy to unsign too. for those who have root and know how to unsign (open apk with winrar, move out lib, delete lib from apk, move lib back into apk), just unsign the mod, install, fully max everything u want to max>download normal apk from apkcombo (its a split apk so you need sai. search sai on playstore and install)>use sai to install the downloaded zip over the mod>now you can sign in with google play and keep all your upgrades, but not currencies>enjoy online