Lumio: Circuitry

Lumio is a puzzle game about how electronics think. Each level is a blueprint: lamps, switches, and empty slots for logic gates. Drop in the right gates, run the wires, flip the inputs — and the circuit comes alive: lights glow, signals race, counters tick. It all starts with a single lamp and a NOT gate. Then come AND, OR, and XOR, the laws of logic and truth tables, adders, flip-flops and memory, counters, registers, and buses. By the end, you’re building a calculator, a Turing machine, and a tiny processor that runs your own program. WHAT’S INSIDE • 371 levels in 17 acts, from the first gate to a mini computer • 170+ short illustrated lessons: theory shows up right when you need it and stays at hand • Many kinds of puzzles: build a circuit from a truth table, simplify one with a Karnaugh map, find and fix a bug, wire it up by hand • Circuits at work: a smart home and a burglar alarm, a robot, light sensors and neurons, a baby monitor, Morse code, oscillators, and sound • A truth table and an oscilloscope right on the blueprint; pause to flip the inputs by hand • Two-step hints for when you’re stuck • A short animated prologue before each new topic • Notes on the history of computing, with a look at Russian engineering: Zhegalkin, the Setun computer, the MK-61 calculator STARS AND GAME CENTER Earn up to three stars per level: fewer hints and mistakes, more stars. Stars unlock new acts. Game Center has act leaderboards, friends in act summaries, and achievements. FREE, NO ADS Acts unlock with stars. No ads, no sign-in. The Full Game is a single one-time purchase: acts unlock as you play, no stars needed, including the last two — Tricky Circuits and Mini Computer. One purchase covers iPhone, iPad, and Mac, and works with Family Sharing. ON ALL YOUR DEVICES iPhone, iPad, and Mac. Progress syncs through iCloud. Dark mode. 14 languages. No electronics background needed — just curiosity.