Scary Teacher 3D is a stealth puzzle game where you sneak into your former teacher's house, scavenge for items across detailed rooms, and set up elaborate pranks — all while dodging her patrol routes. Every level presents a different objective, from rigging her furniture to freeing trapped pets, and getting caught means starting over or losing your progress on that mission.

This free online game runs directly in your browser on PLRun with no download required. Scary Teacher 3D puts you in the shoes of a student who has endured years of harsh treatment from a teacher known as Miss T.

When she moves in next door, you take the opportunity to sneak into her house and get creative revenge through a series of increasingly elaborate pranks. The game is structured around chapters — each containing multiple levels with unique prank objectives — and the difficulty scales as you progress from straightforward tricks in Chapter 1 to more complex multi-step puzzles in later chapters.

Developed by Z & K Games (also known as ZnK Games), the game was originally released on mobile in 2017 and has since grown into an expansive series with regular chapter updates. The browser version on PLRun runs as an HTML5 game, making it accessible on desktop, tablet, and mobile without any installation.

If you enjoy sneaking through hostile environments and solving problems under pressure, Scary Teacher 3D offers a uniquely humorous take on the stealth genre. Move your character with WASD or Arrow Keys and adjust the camera angle by moving the mouse. Press E to interact with objects, open drawers, pick up items, and perform prank actions.