Problem installing big games in my lumia 638?

i have brought lumia 638 2 months ago.
i have installed asphalt 8 before but now no big size game is installing.
i have tried asphalt 8, modern combat 5, and gt racing 2 and i have tried installing through sd card too.
but problem is same.
it says a problem occurred please try installing again.
what should i do?
i have tried factory reset too.
please help me.

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