They looks same, just like they see us. The coastal city was teared down by earthquake and tidal wave caused by it. A group of black square creatures, was rescuing their brothers and sisters in the ruins day and night with all their efforts, even with their lives.
"The Impure is a platformer type game, you will have to make 3 impures reach the end in each level, but the road was touched by any impure will disappear, that makes you have to think about the way for each impure to pass.