please help! .... my samsung j7 stppped completely while playing

[AC Question]

I have bought samsung j7 with android version 5.1.1 .... while im playing an app. Named (vikings war of clans ) the device stopped completely and restarts ... i have changed the device with new one but same model (galaxy j7 ) amd i played the same app. And other app named ( zombie tsunami ) it makes the same problem .... please help me ... i cant detect the problem ....

 

[B. Diddy]

Welcome to Android Central! Did you install those games from Google Play Store? Perhaps they're not entirely compatible with that device. Google Play Store wouldn't let you install if it were definitely incompatible.