Few video games feature peeing or pooping, but still frequently feature bathrooms for the sake of completeness. To make the bathroom "useful", level designers often stash powerups or ventilation ducts or forgotten keycards in them, but those are all secondary to the bathroom's ultimate function in a video game: to signal expense and production value. In immersive sims like Deus Ex Human Revolution or Prey (2017), the player can turn on showers and flush toilets, and each fixture sports a complex effects setup with swirling particles and refracting water shaders. This "wasteful" use of draw calls and texture memory helps assure you of the game's high budget and huge production team. (For more on the expense of video game water, see Pippin Barr's water museum "v r 3".)
In The Tearoom, I replicate the logic of the pointless expensive video game bathroom. I gratuitously cover every surface with high resolution physically-based materials, apply layers of dirt and grunge decals, lightmap the room at a high luxel density, and incorporate unique period details like vintage light switches and old faucets. I also hand-modeled the Cadillac of urinals, a luxurious drop-floor "Hinsdale", scaled to the original patent drawings... I even do one better than most AAA video games, and allow the player to freely urinate as much as they like. (However, the urine does pool rather unrealistically, to exaggerate the complexity of my flushing simulation.)
