Horror Nun puts you inside a locked-down boarding school with one objective: get out before Sister Madeline finds you. This first-person stealth horror game blends puzzle-solving, exploration, and tense hide-and-seek survival into every attempt at freedom. You can play it free in your browser right now on PLRun — no download, no installation, just fear.
Set inside Eagle's Junior High School during the 1960s, Horror Nun follows a student lured to a summer camp that turns out to be a trap. Sister Madeline, the head of the nunnery, has kidnapped you — and the school's locked corridors, hidden rooms, and dark secrets stand between you and escape. The premise draws loosely from the Evil Nun franchise originally created by Keplerians Horror Games, a Spanish indie studio behind titles with over 50 million downloads.
What makes this free online game compelling is its restraint. There is no constant combat or scripted jump scares driving the tension. Instead, Horror Nun relies on sound design, patrol patterns, and environmental puzzles to build dread. Multiple escape routes, hidden lore, a competitive leaderboard, and five difficulty levels give the game strong replay value as a browser game. Built with HTML5 (Unity WebGL), it loads instantly on desktop, mobile, and tablet without any additional software.
Horror Nun features two distinct modes with separate control layouts. The reference sources show slight variation in key bindings across platforms, so check the in-game tutorial if a key feels unresponsive.
Escape Mode focuses on stealth and puzzle interaction:
| Action | Key |
|---|---|
| Move | WASD |
| Interact / Hide / Use item | F |
| Drop item | G |
| Unhide | T |
| Crouch | Left Ctrl |
| Pause | Esc |
Shooter Mode adds combat and advanced movement:
| Action | Key |
|---|---|
| Move | WASD |
| Look around | Mouse |
| Fire | Left Mouse Button |
| Aim | Right Mouse Button |
| Switch weapons | Mouse Wheel |
| Reload | R |
| Throw grenade | G |
| Pick up items | F |
| Sprint | Left Shift |
| Crouch | Left Ctrl |
| Prone | X |
| Jump | Space |
Some browser versions may map interact to E or left-click instead of F. If controls feel off, try both.
Your goal is to leave Eagle's Junior High School alive. The school contains locked doors, electrical systems that need restoring, and items scattered across classrooms, kitchens, and hallways. You must explore, collect tools, and solve layered puzzles to unlock one of several escape paths.
The main door escape, for example, requires finding a Small Cable, installing it in the Electric Panel, opening the Automatic Blind, retrieving a Broom, then using it on a rotten ceiling in the secretary room to drop a Cookies Box. That box must be thrown from the Balcony to the basketball court below, where it reveals the Main Door Key. Other routes lead through the parking area and involve entirely different item chains.
Sister Madeline patrols the school and reacts to sound. Getting caught ends your run. Crouching reduces noise, lockers and furniture serve as hiding spots, and listening for footsteps gives you warning before she rounds a corner. Unlike action horror games, Horror Nun punishes rushed movement — surviving depends on patience and route planning, not reflexes.
The game spans multiple in-game days, and objectives shift daily. Built-in tips at the start of each day reveal where critical items have moved — cables might appear in kitchen drawers one day and a storage room the next. Five difficulty levels (Ghost, Easy, Normal, Hard, Extreme) adjust how aggressively Sister Madeline patrols and detects you. Ghost mode essentially lets you explore freely, while Extreme demands near-perfect stealth. A leaderboard ranks players by escape route used, difficulty, completion time, and days survived.
Each in-game day begins with a hint about where key items have spawned. Skipping these means wandering blind through rooms while the nun patrols. Treat the daily tip as your first objective marker.
The main door escape is the most documented and straightforward path. Master the sequence — Cable, Electric Panel, Blind, Broom, secretary room, Balcony throw, basketball court key — before attempting more complex routes. Knowing one reliable route gives you a fallback on harder difficulties.
Lockers and large furniture are your lifeline. During your first few runs on Ghost or Easy difficulty, note where hiding spots are relative to puzzle locations. When you later play on Hard or Extreme, you will already know where to dive when footsteps close in.
Inventory management matters. Rather than grabbing everything, identify which item your current objective requires and go directly for it. Drop items at safe midpoints if you need to make multiple trips, and plan a route that minimizes backtracking through dangerous corridors.
Corridors amplify sound. Crouching while moving through tight spaces reduces detection risk significantly. Save sprinting for open areas where you have line-of-sight on Sister Madeline's position and a clear path to a hiding spot.
Full completion requires uncovering hidden areas like the laundry room and discovering the secret of the mysterious boy with blue hands. Ghost mode removes the pressure of being hunted, letting you thoroughly explore every room and trigger every hidden event without risk.
Please share by clicking this button!
Visit our site and see all other available articles!