WorldOS
C
HistoryFantasy

Camp Half-Blood

Look, I didn't want to be a half-blood.

E
Erika Flores0 followers · 13 worlds
000
Remixed fromCamp Half-Blood· Erika Flores
Start Simulation
Civilization 1: 16 Zaps / turn Civilization 1 Small: 7 Zaps / turn

Camp Half-Blood: The Lost Prophecy

Percy Jackson is missing.

It is December, shortly after the winter solstice. You are a demigod, and Camp Half-Blood is once again filled with uncertainty. A few days ago, Annabeth Chase and Butch Walker returned from a desperate quest at the Grand Canyon... but they didn’t come back with Percy Jackson. Instead, they found three unknown demigods: Leo Valdez, Piper McLean, and Jason Grace, a boy with no memories who appeared out of nowhere. No one knows where Percy is or why the gods are silent, but everyone senses that something much larger is beginning.

Discovering who you are is up to you: your divine parent, the cabin you belong to, your abilities, the friendships you form, and the path you choose to follow this summer.

⚔️ Train every day — sword duels, archery, lava wall climbing, Pegasus racing, combat, and monster training.

🏛️ Earn recognition — complete activities, improve your skills, earn drachmas, win prestige for your cabin, and participate in camp competitions.

🗺️ Accept quests — explore the world, face monsters, solve prophecies, and uncover the secrets behind Percy's disappearance.

🏕️ Make friends... or rivals — live with other demigods, strengthen your relationships, create alliances, develop romances, or face those who challenge your trust.

🔥 Camp life — capture the flag, campfires, meals in the pavilion, cabin meetings, special activities, and conversations that can change the course of history.

Preview

Preview — start a new simulation to actually play

Apps

Characters

P
Percy Jackson

Percy Jackson is a loyal, brave, and impulsive boy who always puts the people he loves before himself. He has a great sense of humor and often responds with sarcasm even when in danger, using jokes to ease tension or hide his fear. He doesn't seek to be a hero or attract attention, but when someone needs help, he is the first to act, even if it means putting himself at risk. He is very protective of his friends, especially Annabeth Chase, and never abandons those he considers family. Although he sometimes doubts himself and makes mistakes due to...

A
Annabeth Chase

Annabeth Chase is an extremely intelligent, observant, and strategic girl who always tries to analyze every situation before acting. She is brave and determined, but unlike other heroes, she prefers to solve problems with wit and planning rather than force. She may seem serious, proud, or even a bit distant at first, as she finds it hard to trust others completely, but once someone earns her trust, she proves to be incredibly loyal and protective. She has a strong desire to prove her capability and hates being underestimated. Although she usually hides her em...

G
Grover Underwood

Grover Underwood is a kind, empathetic, and big-hearted satyr who always tries to see the best in people. Although he often appears nervous and insecure, especially when he feels his friends' lives are in danger, he never lets fear stop him from doing the right thing. He is deeply loyal and would do anything to protect those he cares for, even if it means putting himself at risk. He has a very special connection with nature and feels enormous respect for animals, plants, and the natural world, which is why he always seeks to care for and defend them. Despite not being...

L
Leo Valdez

Leo Valdez is a brilliant, witty, and extremely creative boy who always finds a way to build, repair, or invent something, even in the most difficult situations. He has an outgoing personality and a constant sense of humor; he makes jokes, uses sarcasm, and flirts easily, often to ease tension or avoid showing what he really feels. Behind that carefree attitude hides someone who has experienced many losses and fears being alone or not being enough for others. He often feels like the "seventh of..."

J
Jason Grace

Jason Grace is a noble, responsible, and disciplined boy who always tries to do the right thing, even when it means sacrificing his own desires. He has a strong sense of duty and is accustomed to carrying great responsibilities, so he usually puts others' needs before his own. He is a natural leader who inspires confidence with his calm, maturity, and capacity to keep a cool head in moments of crisis. Although he may seem serious or reserved at first, in reality, he is kind, patient, and deeply compassionate. He is not interested in power or recogn...

P
Piper McLean

Piper McLean is an independent, brave, and very intuitive girl who usually understands others' emotions with ease. She doesn't like to attract attention or be treated as someone special due to her father's fame, preferring people to know her for who she really is. She has a big heart and deep empathy, so she always tries to resolve conflicts before resorting to violence. Although she sometimes doubts herself and whether she meets expectations, she shows enormous strength when those she loves are in danger. She is loyal, protective, and capable of...

Win / Lose

Win: Survive the summer, complete the quests that fate places on your path, help uncover the truth about Percy's disappearance, and become a hero worthy of the Great Prophecy.

Lose: Die on a mission, fail to protect your companions, let enemy forces achieve their goal, or make decisions that change the fate of the world forever.

Similar worlds

J

JJK

Jujutsu Kaisen

🧑‍🤝‍🧑💬📸🎯🗺️📱+4
Kira fg
2674K8
T

Tokyo Revengers

Gangs, chaos, and a mission

🧑‍🤝‍🧑💬🌳📧🗂️🎒+7
Laura del Campo San Miguel
2K128K4.8
W

WW2 Game

Lead a nation through the global Second World War. Empires, oceans, colonies, and fronts move together.

💬🎯🗺️📖🎭🕐
World101
1K28K4.5
T

Three Kingdoms Simulator

196 AD. The Han is a corpse on the throne and a dozen warlords carve up the realm. Take one banner, command its armies, out-think the rest — and forge the dynasty that ends the age of chaos.

🧑‍🤝‍🧑💬🎯🗺️📖🕐
World101
51419K4.3
A

Avengers

🧑‍🤝‍🧑💬📸🎒🎯📱+3
Brisa Acostape
4728K67
O

One Piece

One man's ambition sparked the Great Pirate Era, but it is the will of a rubber boy and his crew that will bring the world order to its knees; an epic of freedom, unbreakable bonds, and forbidden mysteries where a group of outcasts challenges kings, emperors, and gods.

🧑‍🤝‍🧑💬🎒🎯📖🕐+3
zl1nne
58019K38
T

The Amazing Digital Circus

TADC

🧑‍🤝‍🧑🎯📖🕐📊
Rra Eres
3449K15
M

Modern Day 2026

Lead any nation in the world of today.

💬🎯🗺️📖🕐
World101
2433K5
N

Naruto Simulator

Forge your ninja path starting in the Hidden Leaf and journey across the Five Great Shinobi Nations.

🧑‍🤝‍🧑💬📜🎒🎯📖+4
No tengo nada y todo es tuyo
48815K26

Medieval Simulator

Amidst mud, plague, and the lord's whip, secure a chance to die in your own bed.

🧑‍🤝‍🧑💬🎒🎯📖🕐+1
cyberbabyexp
46814K21
M

My Hero Academia — Canon RPG

Enter the world of My Hero Academia as it appears in the manga and anime. Meet heroes, villains, students, and civilians as you write your own story.

🧑‍🤝‍🧑💬📧🎒🎯📱+3
urooooooooo7
30617K22
P
v2

Pokemon 🔴

Your own adventure as a Pokémon trainer!

📧🎯🗺️🎵📖🔔+4
Sunnie
3027K21
No ratings yet — be the first.
Your rating

Comments

No comments yet — be the first.

Frequently asked questions

What is Camp Half-Blood?

Camp Half-Blood is an AI simulation world on WorldOS: you make the calls and the AI plays out the story, characters, and consequences in real time. Every run is different.

How do I play Camp Half-Blood online?

You play Camp Half-Blood online right in your browser — nothing to download. Hit "Start" on this page, pick your character setup, and you're in; type your actions in plain language.

Is Camp Half-Blood free to play online?

Yes. You get free zaps every day (no card needed) — enough to play Camp Half-Blood online daily. Want more? There are subscription plans.

Is there a Camp Half-Blood app?

WorldOS runs in your mobile and desktop browser, so you can play Camp Half-Blood online without installing anything.

What are some games like Camp Half-Blood?

WorldOS hosts thousands of AI worlds — strategy, history, romance, mystery, and more. Browse the gallery to find more games like Camp Half-Blood.

Can I make my own Camp Half-Blood?

Yes. Remix this world into your own version in one click, or build a brand-new world from scratch with the AI generator.