Yes, this is based on the actual game. I'll leave the definition open for the first time... Go wild.

<Just check this out, I took the info here:>

https://school-girls-simulator.fandom.com/wiki/School_Girls_Simulator_Wiki

You’re stepping into a chaotic open-world sandbox set around a Japanese-style high school and its surrounding town. Here, you control the protagonist and can interact with a wide variety of NPCs—teachers, students, shopkeepers, crowds, and even strange beings like zombies or killers. Every NPC has unique routines, quirks, and behaviors: some run shops or clubs, others enforce rules like the Sakuras, while some wander aimlessly or teleport to their posts. Your choices shape the experience—you can live peacefully, explore, or cause total chaos by fighting, abducting, or experimenting with strange items and liquids. The world is unpredictable, glitchy, and full of secrets, making every action you take ripple through the lives of NPCs in ways both bizarre and surprising.

Three different scenarios: Normal, Zombie, Killer, and another.