No it's not best way to know if any game or app is offline useable is if for 1 most will say it in the description in the app store 2 it'll have a option in the game or app settings and 3 if y'all hadn't seen offline usage anywheres and went ahead n installed it , open yr device settings n turn off yr wifi , data, hotspot, Bluetooth or just turn on yr airplane mode then open the game or app n you'll soon find out for sure.