BitWise

a bench asks for a machine that follows orders and halts itself.Seven chapters, one engineThe campaign map is the Iron Heart, the engine the whole workshop turns on. Each chapter is one of its subsystems. The map is a machine too, and in the third chapter you build it yourself.The Spark. Battery, lamp, switch, and the return path. Rub amber, charge an electroscope, and watch the first spark cross the gap.Currents & Light. Resistors, capacitors, diodes, a transistor, an op-amp, a transformer you wind yourself, and the coil that crowns the title screen.The Electromechanical Arts. Wrap current around iron and the iron moves. The relay, the burglar alarm, the telegraph relay, a buzzer, a generator with no battery in it, and the motor.The Boolean Engine. AND, OR, NOT, then NAND, then everything from NAND. Truth tables you test by tapping a row, comparators, and a glitch you cannot see.The Calculating Engine. Read bits as a number, then teach dead metal to add, carry, subtract, and multiply.Memory & Time. Turn one wire around and a circuit gains a past. Latch, flip-flop, counter, clock, an address book, and the stored program.The Telegraph. Learn Morse by ear, key it by hand on a telegraph key, then build the receiver that reads it for you.Live current on every wireAnalog benches run on the same nodal analysis SPICE uses. Digital parts settle every tick. Touch any part and the Inspector's Probe reads its live voltage. Put a trace on the Oscillograph and watch a counter tick, or a relay chatter alternating current out of two batteries. The grader watches what the circuit does. A strange build that does the job passes, and a bench that is teaching the relay will not take a lamp lit around it.One idea per levelEach new idea gets a level of its own before the next one leans on it. Predict the output before you test it, if you like. Hints climb three rungs, from a nudge to the whole build, and you decide how far up to go. The Almanac keeps a concept map, a toolkit of every part you have sealed, and a codex of where it all came from: Shannon's thesis, the telegraph stations that earthed their return wire, the SRAM cell.Players of Shenzhen I/O, Turing Complete, and Human Resource Machine will know the shape of this. Here the thing you build is a circuit, and it runs. Anyone who has only ever wondered how a computer works can start with the lamp.At launch238 levels: a 168-level main path through the seven chapters and 70 optional levels, in families like Diagnose & Repair, The Glitch You Cannot See, The Address Book, and The Machine That Follows OrdersA Sandbox with open benches, a level editor, and Steam Workshop sharingThe Wireless Room, a Koch-method Morse trainerThree-star goals, 14 achievements, and cloud savesEvery sound in the game, music included, synthesized by the game itselfThe game makes no network calls of its own. Everything you make is saved on your disk, and your campaign progress, settings, Wireless Room progress, My Circuits saves, My Chips and level editor draft are also kept in Steam Cloud.AccessibilityEvery level plays with the mouse alone. Settings has a colour-blind assist (a colour-blind-safe wire palette and a 1/0 readout on outputs), a reduce-motion setting, and separate master and music volume. On the campaign's Morse levels every signal is also shown as light, so they play without sound; one optional drill, Lights Out, is copied by ear alone. The Telegraph's sending levels ask for timed key presses.