Player guide
How to play SignalStack
SignalStack is a short browser memory game. You watch an incoming packet flash across four channels, apply the round rule, and enter the correct reply before moving to the next relay.
The four channels
- 1 — Amber is the left-most channel.
- 2 — Cyan is the inner-left channel.
- 3 — Violet is the inner-right channel.
- 4 — Rose is the right-most channel.
The modifier rules
- Clean relay: answer exactly what you saw.
- Mirror relay: swap the outside and inside lanes.
- Shift up: move each pulse one lane forward in the loop.
- Echo tail: replay the packet, then repeat its last pulse once.
Controls
- Click the channel buttons or press 1, 2, 3, and 4 on the keyboard.
- Backspace clears the current reply packet.
- You do not need a separate confirm button — SignalStack grades the packet automatically once you fill all reply slots.