It is not Inception.
I have seen this film but I do not know its name or if it is a known movie, I will just tell you what I remember and if you could help me to find this film.
There was a man who thought he would win a contract because of his design work, but actually, he was being kidnapped to an unreal world where you can jump between places. It is like a dream world, and those people are living inside it. There are monsters with long black legs inside this world who are attracted to humans and try to kill them. People are fighting those monsters and trying to destroy them. The people are living in a hidden place with an entrance inside a bus.
It appears that the man was kidnapped to design a layer or a city in that world. He wakes up to find that this is not real and tries to kill the man or team responsible for doing this. At the end of the film that man builds his own city in that world.
