How to use "unreal" in a sentence

2.00 am The darkness seems unreal

"It was unreal, all right," remarked Sala weakly.

For a moment, this felt as unreal as being in a pod

I go out into the Byfleet Road, and vehicles pass me, a boy on a bicycle, children going to school - and suddenly they become strange and unreal, and I hurry on again with the soldier through the hot, dangerous silence