Circuit Connect Free online game

What is it?

Circuit Connect is a puzzle where you rotate the wire piece on each tile to build a single circuit carrying power from the central source to every tile. The rules are the same as the puzzle known as Net.

Each tap rotates a piece 90° clockwise. No wire may point off the board, no loops are allowed, and the puzzle is solved when every tile lights up. Every puzzle has exactly one solution.

How to play

1. Tap a tile to rotate it 90° clockwise. Long-press to lock it so you don't rotate it by mistake
2. Tiles connected to the power source in the middle light up. Light them all to win
3. No wire may point off the board, and no loops are allowed

Playing on PC (keyboard · mouse)

On phones you tap the screen; on PC you can also use the mouse and the keys below.

Difficulty and rankings

There's a weekly ranking and an all-time ranking; the weekly one resets every Monday at midnight (Korea time). For details, see the Help.

Good to know on Hanpanmadang

• Boards are 5×5, 7×7 or 9×9. Pieces are ends (1 wire), straights and corners (2 wires) and T-pieces (3 wires); there are no crosses.
• Only tiles connected to the power source (the yellow center tile) light up. When every tile is lit, the puzzle is solved, and there are no loops or loose wires left.
• Your rotation count is shown alongside the minimum needed to solve it. Rankings are by time; the rotation count is just for reference.
• Hints explain the reasoning instead of giving the answer, and each one adds 30 seconds to your time. If a hint points at a tile you locked with a long press, it unlocks.

Learn from examples

Common mistakes

Pointing two end tiles (bulbs) at each other.

Two connected end tiles form an island that can't link to anything else. Always point end tiles toward other pieces.

Rotating based only on which tiles are lit.

Only tiles connected to the source light up, so correctly placed tiles may still be dark. Work outward from tiles whose orientation is forced, like corners and edges.

Not noticing you've made a loop.

If some tiles stay dark but there seems to be nowhere left to connect, there's a loop somewhere. Find the wire that links two already-connected tiles and break it.

Tips

• Once you've settled a tile, move straight on to its neighbors. Spreading out one tile at a time from settled tiles is much faster than poking around the board.
• Remember which tiles you've settled so you don't rotate them again. Their wires are clues to how the neighboring tiles must face.
• Straight pieces have only two orientations, so they're the quickest to settle. Often a single settled neighbor decides their direction.
• Long-press tiles you're sure about to lock them. Locked tiles won't rotate when tapped, so you make fewer mistakes.