To be fair, no game, movie or creation is ENTIRELY anyone's intellectual work. During their lifetime, every artist encounters work of art by other artists who they take inspiration from.
Now, according to your post, every First Person Shooter is a "cheap ripoff" of the games Wolfenstein or maybe Quake.
As someone mentioned in the comments, Monument Valley is quite similar to the P S P title Echochrome, in which case, it makes Monument Valley a ripoff of that game, as per this post.