Close the loop and the lamp lights. Build the relay, the gate, the adder, the latch, the counter, and a machine that reads Morse. Every circuit runs on a real simulator, and the parts you build become parts you build with. 238 levels about electricity and the machines people made from it.
Current US price
Outdated, last checked 3 days ago
0 US price changes since tracking began. Latest: $11.99, 20% off $14.99. Lowest recorded $11.99 on Oct 18 UTC.
| Date (UTC) | Price |
|---|---|
| Oct 18 | $11.99, 20% off $14.99 |