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The Major System

Every digit becomes a consonant sound. Sounds become words, words become images — and images are easy to place in a palace.

Walk the Major Palace

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Start a review

Say each recall aloud before you walk — voice and steps together make it stick.

Session style Route through the castle

Castles Session size Begin

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Review complete

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Install as an app

Memory Castle can live on your home screen like a normal app — full screen, works offline.

Install now

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5-minute questionnaire

Answer as many or as few as you like — honest and unpolished beats kind and vague. Everything goes straight to the builder.

Before reading anything, what did you think this app was for? What was the first thing you tried to do? Did you notice anything special about the doors? If so, what? Where did you get stuck or confused? How did moving around feel on your device? Choose… SmoothOkayClunkyI could not figure out how to move Did you pin anything (text, an image, audio, or video)? How did that go? Did you try Review mode? Did the recall loop make sense to you? Would you use this alongside your current memorization routine? Choose… YesMaybeNo If you answered "Maybe" or "No" — what is missing? What is the one thing you would change first? How likely are you to recommend this to a fellow memorizer? Choose… Very likelyLikelyNot sureUnlikely Is there anything else you would like to say? Send

Prefer email? Write directly instead.

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About Memory Castle

A 3D memory palace for the things worth keeping — walk it, pin what you want to remember, and train your recall until the castle lives in your head.

Made with the help of AI.
Furniture models: Kenney.nl (CC0) · 3D engine: Three.js
Version 53 · Data storage: checking\u2026

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Controls

🔊 Ambient sound: On 🧭 Gyro: use phone motion to look 📋 5-minute questionnaire 📱 Install as an app About Memory Castle

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Memory Castle

Walk a 3D castle on your phone and pin what you want to remember — images, sounds, video — onto its rooms and furniture. Built first for memorizing Bible chapters and verses.

Why it works: your spatial memory is the strongest memory system you have — you never forget the layout of your childhood home. The method of loci borrows that power: give each verse a place, and walking there brings it back. Every door here even tells you its room number by the count of its corners.

Start exploring Guide & tutorial — coming soon

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Your castles

Each castle keeps its own media and furniture.

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