Marble Engine
Build factories that think
Free · Designed for iPad. Not verified for macOS.
iPad
Marbles in, answers out! Build marble factories from belts and machines, no code needed. 100 orders, a full sandbox, your own chips and puzzles to share.
Marbles in. Answers out.
Marble Engine is a cozy 3D programming puzzle game. Every marble is a piece of data: numbers, letters, true or false. Lay conveyor belts, drop in machines and turn the marbles coming out of the hoppers into exactly what each order asks for. No code to type, just machines you can watch think.
LEARN BY BUILDING
RAM, your cheerful robot foreman, walks you through 100 orders across 10 chapters. Start with a single belt, then add, compare, branch and loop your way up to sorting, searching, palindromes, Fibonacci and the Collatz conjecture. Every order comes with test sets, so you always know whether your factory really works.
15 MACHINES, ZERO CODE
• Arithmetic mills, transmuters and stampers for math and type changes
• Sorters, evaluators and control valves for logic and branching
• Registers, accumulators, stack towers and memory banks to remember things
• Loop spinners and pulse clocks for loops and endless programs
• Splitters, bridges and incinerators to shape the flow
SANDBOX: ANY PROBLEM YOU LIKE
Design your own warehouse with every machine unlocked. Type live input on a keyboard hopper, draw on pixel displays, and test whatever idea pops into your head.
BUILD YOUR OWN CHIPS
Pack a whole factory into a single IC chip and reuse it inside bigger designs. Chips can hold other chips, and you can open any chip to tinker with its insides.
CHALLENGE BUILDER
Write a puzzle with its own brief, tests, walls and machine limits. Prove it can be solved, then share it with friends as a short code.
MADE FOR iPAD
• Touch-first controls: tap to place, drag to lay belts or move machines, pinch to zoom, twist to turn the camera
• A larger interface sized for fingers, plus full support for a hardware keyboard
• Run, pause, step through cycles one at a time and speed up to 16×
PLAY YOUR WAY
• Fully playable in English and Vietnamese
• RAM speaks English, Vietnamese or cute robot beeps
• Optimize for fewer cycles, fewer machines or fewer belts
Whether you are learning to think like a programmer or you already love logic puzzles, Marble Engine turns algorithms into something you can see, touch and tweak.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Kiet Nguyen Tuan, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Kiet Nguyen Tuan
- Size
- 138.6 MB
- Category
- Puzzle
- Compatibility
Requires iPadOS 15.0 or later and a device with the A12 Bionic chip or later.
- iPad
Requires iPadOS 15.0 or later and a device with the A12 Bionic chip or later.
• iPad Pro (11‑inch)
• iPad Pro (11‑inch) Wi‑Fi + Cellular
• iPad Pro (12.9‑inch) (3rd generation)
• iPad Pro (12.9‑inch) (3rd generation) Wi‑Fi + Cellular
• iPad mini (5th generation)
• iPad mini (5th generation) Wi‑Fi + Cellular
• iPad Air (3rd generation)
• iPad Air (3rd generation) Wi‑Fi + Cellular
• iPad Pro (11‑inch) (2nd generation)
• iPad Pro (11‑inch) (2nd generation) Wi‑Fi + Cellular
• iPad Pro (12.9‑inch) (4th generation)
• iPad Pro (12.9‑inch) (4th generation) Wi‑Fi + Cellular
• iPad Air (4th generation)
• iPad Air (4th generation) Wi‑Fi + Cellular
• iPad (8th generation)
• iPad (8th generation) Wi‑Fi + Cellular
• iPad Pro (11-inch) (3rd generation)
• iPad Pro (11-inch) (3rd generation) Wi‑Fi + Cellular
• iPad Pro (12.9-inch) (5th generation)
• iPad Pro (12.9-inch) (5th generation) Wi-Fi + Cellular
• iPad mini (6th generation)
• iPad mini (6th generation) Wi-Fi + Cellular
• iPad (9th generation)
• iPad (9th generation) Wi-Fi + Cellular
• iPad Air (5th generation)
• iPad Air (5th generation) Wi‑Fi + Cellular
• iPad (10th generation)
• iPad (10th generation) Wi‑Fi + Cellular
• iPad Pro (11‑inch) (4th generation)
• iPad Pro (11‑inch) (4th generation) Wi‑Fi + Cellular
• iPad Pro (12.9‑inch) (6th generation)
• iPad Pro (12.9‑inch) (6th generation) Wi‑Fi + Cellular
• iPad Air 11-inch (M2)
• iPad Air 11-inch (M2) Wi-Fi + Cellular
• iPad Air 13-inch (M2)
• iPad Air 13-inch (M2) Wi-Fi + Cellular
• iPad Pro 11-inch (M4)
• iPad Pro 11-inch (M4) Wi-Fi + Cellular
• iPad Pro 13-inch (M4)
• iPad Pro 13-inch (M4) Wi-Fi + Cellular
• iPad mini (A17 Pro)
• iPad mini (A17 Pro) Wi-Fi + Cellular
• iPad (A16)
• iPad (A16) Wi-Fi + Cellular
• iPad Air 11-inch (M3)
• iPad Air 11-inch (M3) Wi-Fi + Cellular
• iPad Air 13-inch (M3)
• iPad Air 13-inch (M3) Wi-Fi + Cellular
• iPad Pro 11-inch (M5)
• iPad Pro 11-inch (M5) Wi-Fi + Cellular
• iPad Pro 13-inch (M5)
• iPad Pro 13-inch (M5) Wi-Fi + Cellular
• iPad Air 11-inch (M4)
• iPad Air 11-inch (M4) Wi-Fi + Cellular
• iPad Air 13-inch (M4)
• iPad Air 13-inch (M4) Wi-Fi + Cellular
• iPad mini (A20 Pro)
• iPad mini (A20 Pro) Wi-Fi + Cellular - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later and a device with the A12 Bionic chip or later.
- iPad
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Mikademy Inc.
