Neon Circuit

Neon Circuit swaps water for electricity. Each board is a grid of pipe-like tiles with a power source and one or more terminals, and the aim is to rotate the tiles until a continuous, glowing circuit carries power from the source to every terminal.

Each tap turns a tile by 90 degrees, so a piece is never more than three taps from any orientation. The developer lists 40 levels split across 8 zones that grow in complexity, starting on small 4x4 grids and building up to 8x8 networks where as many as five terminals need power at once. Stars are tied to efficiency. Finish a level in fewer moves than par and you earn all three. Clicking works on a computer and tapping on a touch screen, and the whole thing plays in a landscape frame.

Click or tap a tile to rotate it a quarter turn. Turn tiles until the segments link into an unbroken circuit running from the power source to each terminal on the grid. A level is solved when every terminal has power. Use as few moves as you can, because beating par is how you earn three stars.

Every tap counts as a move against par, so decide how each tile should end up facing before you start tapping it. Leave alone any tile that already points the right way. On the bigger 8x8 boards with several terminals, trace the whole network first rather than solving one terminal at a time.

A circuit-rotation puzzle with a neon look. Landscape frame (800 by 600). Click or tap controls. The developer lists 40 levels in 8 zones, grids from 4x4 to 8x8, up to five terminals and par-based three-star ratings.

Bright Connect also lights things up with power, linking batteries to bulbs within a move limit, and Connect the Pipes: Water Puzzle has you rotate pipes and mix coloured water for its drains.