How to minimize apps/games without restart? Recently i playing a games called Clash of kings.
But when i minimize this game and opean again.
This game is automatically restart.
So, Is there any way to minimize this game and open again without restart?
note:i face the same problem in clash of clans.
If the app is not coded strangely then this should happen automatically.  (Otherwise, you'll need to contact the developers.)

However, it seems likely that your device is running out of free RAM and is either terminating the app or telling it to release memory.  You can try running fewer apps/services at the same and see if it helps; otherwise, you'll need a device with more RAM.

One more option is (if you have a rooted device) to convert the app into a System app.  They are given higher priority and not killed as frequently; I just did this with tTorrent last night because it was being instantly killed in the background, and now it's working fine.