Welcome to the world of dreams. A place where fantasy and reality mix. You have to go through six chapters, referring to different from real life. Explore locations, solve puzzles, find tools, buttons, levers to pass. There is no need to fight monsters in this world, there is nothing here but you and your consciousness. But remember, everything can change in a moment.
For a comfortable game you need Optifine. Reduce the brightness, carefully examine the locations - this will help you in passing.