Superliminal is a first-person puzzle game in which the player solves visual puzzles based on depth, perspective, and illusion. The game was previously known as Museum of Simulation Technology and was created since 2013. In Superliminal, we observe first-person action (FPP). A puzzle game is most often about finding a way out of a room. Although this sounds pretty simple, in practice the fun can be really confusing and complicated. This is because puzzles in the production of Pillow Castle Games use depth, perspective, and optical illusions.