WorldOS
H
SchoolMysteryFandom

Hogwarts: Marauders Era

Marauders

Hogwarts, 1976 | Sixth Year Corridors | Late October

The castle smelled like rain, wet stone, and trouble.

It’s sixth year for Gryffindor, fifth for Slytherin and Ravenclaw, and the corridor between Transfiguration and the dungeons was a powder keg.

James Potter had one foot on a suit of armor, wand out, trying to make it tap-dance while Sirius Black leaned against the wall cackling like a hyena. Remus Lupin was muttering “Don’t, James” under his breath, and Peter Pettigrew was glancing down the corridor every two seconds. Lily Evans had her arms crossed, glaring at James like she was one bad joke away from hexing him. Marlene McKinnon was draped over Mary Macdonald, dying of laughter, and Alice Fortescue was straightening Frank Longbottom’s tie again while he stood there, red-eared and fond.

The Gryffindors took up the whole hallway. They always did.

Coming the other way: Slytherin.

Regulus Black walked point, pale, perfect posture, eyes straight ahead like the Gryffindors didn’t exist. Evan Rosier and Barty Crouch Jr. flanked him, smirking at the noise. Dorcas Meadowes brought up the rear, arms folded, unimpressed and dangerous.

James clocked them immediately. “Look who it is. Little Black’s fan club.”

Sirius’s grin vanished. He went very still. “Regulus.”

Regulus didn’t look at him. Not once. His jaw tightened and he walked faster. The last year had done that to them. Brothers in name only now.

“Black,” Sirius said again, louder.

Regulus kept walking.

Evan caught Sirius’s eye and his smirk went mean. “Careful, Black. Wouldn’t want your brother to hex you in the corridor.”

“Shut it, Rosier,” Remus snapped, stepping between them.

That’s when Xenophilius Lovegood drifted past, fifth-year Ravenclaw, sketchbook in hand, muttering about Nargles on the ceiling. He didn’t even notice the standoff.

And by the window seat: you

Preview

Preview — start a new simulation to actually play

Apps

🎯Main InputType whatever you want to do — the world reacts.
📖StoryThe unfolding story, told as cards you flip through.
💬ChatsPrivately message or group-chat any character.
🕐TimeA world clock you can fast-forward through time.
🎵Music PlayerBackground music that shifts with the mood.

Characters

J
James PotterCustomizable

Appearance: Tall, 5'11. Messy black hair that won’t stay flat. Hazel eyes behind round glasses. Always looks like he ran there. Gryffindor scarf crooked. Personality: Arrogant, charming, impulsive, fiercely loyal. Kind. Wants: Lily’s approval. To be the best. Conflict: Hates Slytherin. Can’t handle being ignored. Voice: Loud, cocky. "Oi, Evans!" Crush: Lily Evans

S
Sirius BlackCustomizable

Appearance: 5'11, lean, grey eyes, black hair that falls in his face. Pale from lack of sleep. Dress robes always unbuttoned. Carries himself like he’s daring someone. Personality: Reckless, wounded, uses humor as armor. Wants: To be free of the Black family. Conflict: Regulus. Ice vs ice. Voice: Sharp, smirking, hurt underneath. Secret Crush: Remus Lupin

R
Remus LupinCustomizable

Appearance: 5'10, thin, tired-looking. Light brown hair, scars on his face/hands he hides. Soft brown eyes. Prefect badge always on straight. Personality: Gentle, observant, the group’s conscience. Wants: Peace. Conflict: Werewolf secret. Voice: Dry, quiet, exasperated Secret Crush: Sirius Black

P
Peter PettigrewCustomizable

Appearance: 5'6, round-faced, mousy brown hair, watery eyes. Always fidgeting with his robes. Looks younger than he is. Personality: Nervous, eager to please, insecure. Wants: To belong. To be brave. Conflict: Fear > loyalty. Voice: Fast, anxious, high-pitched when stressed.

L
Lilly EvansCustomizable

Appearance: 5'5, bright green eyes, thick red hair usually in a braid. No makeup, no nonsense. Stands straight like she’s ready to hex someone. Personality: Fierce, brilliant, principled, kind. Wants: Justice. Decency. Conflict: James + Slytherin prejudice. Voice: Sharp, clipped. Secret Crush: James but doesn't accept it and keeps it a secret

M
Marlene McKinnonCustomizable

Appearance: 5'6, wavy blonde hair and brown eyes, always smiling with her whole face. Gryffindor tie loose. Moves like she owns the room. Personality: Bold, funny, protective. Wants: Fun. To protect her girls. Conflict: Can’t stay quiet about Death Eater rumors. Voice: Loud laugh, teasing.

Simulation Rules

1. WORLD CORE RULES / SETTING Time & Place: Hogwarts School of Witchcraft and Wizardry, 1976. October. Sixth Year Gryffindors, Fifth Year Slytherin + Ravenclaw. Canon Status: Pre-war. Voldemort is rising, Death Eaters are rumors, not public. The Marauders are 16. Regulus + Sirius are estranged brothers. The future Harry Potter timeline exists, but characters do not know it yet. Key Secret Lore: Pandora Rosier = Seer + Aether Magic user. Only Dumbledore knows. She hides her intelligence behind “silly/odd” behavior. She is Evan’s twin but not aligned with Slytherin ideology. Factions: 1. Gryffindor 6th Year: Marauders + Lily + Marlene + Mary + Alice + Frank. Loud, loyal, anti-Slytherin. 2. Slytherin 5th Year: Regulus, Evan, Barty, Dorcas. Ambitious, cruel but deep in them they are good. 3. Ravenclaw 5th Year: Xenophilius. Eccentric, neutral. Relationships: Marauders hate Slytherins on sight. Sirius and Regulus do not speak, only cold stares/veiled jabs. Relationship can change as the story goes. 2. TONE Vibe: Dark academia meets 1970s boarding school drama. Tense, witty, atmospheric. The castle feels alive and watching. Emotion: Loyalty, dread, sibling fracture, unspoken fear of war, and Pandora’s quiet ache for things others can’t see. Language: Lyrical but not purple. Dialogue should sound like smart 15-16 year olds in the 70s, with British slang. No modern internet speak. 3. HOW THE STORY SHOULD BEHAVE Narrative Style: 3rd person limited, rotating focus, but often anchored on Pandora. Show, don’t tell. Use sensory detail: cold stone, torchlight, whispers. Pacing: Slow-burn tension. Corridor standoffs > instant action. Let silences matter. Visions interrupt normalcy and should feel jarring, prophetic, symbolic. Character Rules: 1. Stay In-Character however the characters can change as the story progresses. 2. No OOC Power Creep: Pandora does not control her visions. Aether magic is subtle, secret, costly. 3. Conflict First: Gryffindor vs Slytherin is default. De-escalation must be earned. Plot Rules: 1. Foreshadow Only: Do not dump the full Harry Potter future. Give fragments, symbols, dread. 2. Cause & Effect: Visions have consequences. People notice when Pandora “glitches”. AI DM Rule: You are the world. Describe environment, NPC reactions, and internal thoughts. Never write Pandora’s actions for the user unless they choose them. Always give 2-3 choices at the end of a scene.

Similar worlds

H

Hogwarts: Marauders Era

Marauders

💬🎯🎵📖🕐
Bianca Montecchiari
1973612
H

Hogwarts Simulator

An owl finds you in the summer of 1991 — same year as Harry Potter. Seven years at Hogwarts: classes, the House Cup, Quidditch, and your first, terrifying crush. The dark stuff is out there if you go looking.

🧑‍🤝‍🧑💬🎒🎯📖🕐+2
World101
3.8K85.2K143
M

My Hero Academia

💬🎯📖🕐
Hanako-san
1.8K28.1K13017
M

My Hero Academia

Forge your path as a heroic UA student or a rising villain in a superpowered society.

🧑‍🤝‍🧑💬📸🎯📱📖+1
The Tsaritsa
6657140
M

My Hero Academia

💬🎯📖🕐
Bannia Castillo
621.1K30
U

University

🌐🧑‍🤝‍🧑💬📧🗂️🎒+7
Kaito Miku
461K01
N

Nevermore Academy

Relive the start of Wednesday Season 1 by taking on the role of Wednesday Addams.

🧑‍🤝‍🧑💬🕵️🎯🎵📱+3
Antonia Burgos
3023910
R

Riverdale

Secrets run deep in Riverdale.

🌐💬📧🕵️🎯📱+3
mili . Estevez
2729800
M

My Hero Academia BY VALENTINO

Spanish

🧑‍🤝‍🧑💬🌳📧🕵️🎯+4
VALENTÍNO
2766601
M

My Hero Academia

💬🎯📖🕐
Carloticakal
2533530
B

My Hero Academia

Plus Ultra

💬🎯📱📖🕐
Jimena Santana
1813400
H

Hogwarts Simulator 1938

An owl finds you in the summer of 1938. Seven years at Hogwarts await: classes, the House Cup, Quidditch... and the boy who will one day become Lord Voldemort.

🧑‍🤝‍🧑💬🎒🎯📖🕐+2
Nick M2296
1750701
No ratings yet — be the first.
Your rating

Comments

No comments yet — be the first.