Signal Switch

How to play Signal Switch

Signal Switch is a short cause-and-effect puzzle. The board has nine relays. When you tap one, it changes state together with its orthogonal neighbours. The aim is to leave all relays lit at the same time. There is no hidden timer, artificial life system, or reflex-only answer: every choice remains visible on the board.

• Tap or click a relay: switch the chosen relay and the links above, below, left, and right.
• Arrow keys or WASD: move the white selection across the nine relays.
• Space, Enter, or 1 to 9: switch the selected relay or choose a relay directly.
• U: undo the last switch once in each circuit; R restarts only the current circuit.

Five readable circuits

Each circuit starts from a fixed arrangement and can be solved by noticing which squares share an edge. Early patterns explain the rule, while later ones reward planning two or three switches before acting. The counter shows active relays and taps used, so you can compare a careful run with a shorter solution without inventing public statistics.

Recovery and local rhythm

There is one honest undo in every circuit: it restores exactly the previous board and makes clear that it has been used. Pausing does not reset the puzzle. After the first interaction, restrained Web Audio pulses acknowledge a switch and give the game a light cadence; no music file, interstitial advert, or resource from another domain is loaded.

An original game on this domain

Signal Switch was made for Jogos de Plataforma with Canvas, keyboard and touch controls, vector artwork, and optional sharing. The best result stays in this browser. The player does not open a tab, send you to another site, or depend on a third-party runtime: its code, image, and data are served directly by jogosdeplataforma.com.