Bulb Circuit
Help a beaver electrician wire up a glowing workshop board. Drop wires and spare bulbs into the sockets until every bulb glows exactly as its tag asks, bright, dim or dark.
Play nowHow to play
Controls
TapKeyboard←→↑↓ Space- Tap a part in the tray, then tap an empty socket.
- Tap a placed part to take it back.
- Keys: arrows, Space, 1 and 2.
About the game
Bulb Circuit is a cozy wiring puzzle set in a night-time workshop. A beaver electrician has a breadboard full of brass terminals, a battery cell and a few bulbs, and each bulb wears a tag: a sun means bright, a soft glow means dim and a moon means dark. You drop wires, and later spare bulbs, into the empty sockets until every tag gets a green tick. The board is live, so bulbs light up, dim, short out or pop the moment you place a part.
The circuit is worked out with real electricity rules. Two bulbs in a row share the cell and both glow dim, while the same two bulbs side by side each stay bright, so the layout matters as much as the parts. Later levels add a second cell, wires that skip past a bulb and spare bulbs used as dimmers. Twenty-four levels, three stars for using few parts.
Free to play in your browser. No download, no sign-up. Best on a computer, or a phone held sideways. Your progress is saved on this device.
