Cross Me vs Breadboard

Drag any lines to cross the points. Again and again, a few lines can change into countless wonderful patterns. Some patterns look simple but intriguing, others look complicated but regular. You just need to observe and try, and you will enjoy a series of joys ! Contact us if you have any feedbacks. zhaoym12@163.com

Every circuit in Breadboard is really simulated. Not "connect the dots" simulated — really simulated. Under every puzzle runs a genuine DC circuit solver: currents are computed, voltages divide, power heats resistors. Skip the resistor and your LED actually burns out. Short the battery and you'll cook something. If it lights in Breadboard, it would light on a real bench. That honesty is the whole game. BUILD, DON'T GUESS You get a breadboard, a battery, and a tray of parts. Tap to place components, wire up the strips and rails, and bring the circuit to life. The board behaves like the real thing — power rails, terminal strips, the center gap. What you learn here works on a real breadboard, because it IS a real breadboard. A REAL CURRICULUM, DISGUISED AS A GAME 130 hand-built levels across 13 chapters walk the classic hobbyist path: • LEDs and current limiting — why that resistor matters • Resistor craft — series, parallel, power ratings • Switches, motors, and buzzers — loads that need MORE current, not less • Voltage dividers and sensor chips — engineering a voltage, not just a current • Diodes and zeners — one-way streets and reference voltages • Capacitors — blocking, inrush, and hold-up • Relays — circuits that control other circuits • Inductors — including the flyback diode lesson every maker learns the hard way • Transistors — how a tiny current commands a big one • MOSFETs and level shifters — 3.3V and 5V living together • 7-segment displays — light exactly the right segments • Master Bench capstones — everything at once, under a fuse's current budget Every mechanic is a real concept you'll absorb without ever reading a lecture. STUCK? WATCH THE TUTOR BUILD IT The optional "Solve it for me" tutor places the solution one part at a time and explains each step with real numbers — like a patient friend at the bench. It's there when you want it and invisible when you don't. NEW: THE CHEMISTRY BENCH Switch benches on the home screen to mix acids and bases, weigh precipitates and tame hot reactions, with the same honesty: real pH, real moles, real heat. Chapter 1 (10 experiments) is free; chapters 2 to 4 unlock with a one-time in-app purchase. CALM, PREMIUM, YOURS • No accounts, no cloud, no timers, no energy bars • No ads, no third-party trackers — optional anonymous usage stats, off unless you say yes (Settings, any time) • Fully offline — the whole game works in airplane mode • Buy once, own it. No subscriptions. All 130 circuit levels are included; the only extra is the optional Chemistry Bench unlock • A warm, tactile workshop aesthetic — parchment, brass, and glowing filaments Made for curious tinkerers, makers, students, and anyone who ever wondered why the LED needs that resistor. Come find out — and burn a few on the way.