Space to switch slides. No mobile support. Facts on each: The colors on Level 1 (the office) aren't necessarily static: yellow is just the most commonly seen color. (Context: The colors of the walls and carpet in the image are yellow-orangish.) Level 2 has high and low tide similarly to that of the ocean. The picture was just taken during high tide, where it floods neck-deep for 5-feet tall people. Level 3 is alive, although it isn't intelligent life. Level 4 takes different forms depending on where you grew up. The pic was taken by someone who lived near the city in the suburbs, hence the appearance. When in Level 5, technological devices tell you that you're in Moscow. (This is a joke because haha funny computin [very controversial joke I'm sorry] but is canon anyway.) Levels 1-10 have no entities.
Some dude for the Backrooms.