◂ signal//lock
field manual

How to Play Signal//Lock

Five minutes of mechanics, then you're an operator.

1 · The radar

A green sweep rotates around a circular CRT display. Signals materialize when the sweep crosses their position and slowly decay. Tap or click them before they fade — that's a lock.

2 · Match pairs

Most stages aren't single-target. You need to lock two related signals — same icon, same letter, same biological class — within a short window. The matched pair detonates with a trail streak between them and adds to your score.

3 · Combos & Salvo Strikes

  • Trail Streak — every successful match draws a glowing line between the two signals. Higher combo = brighter, longer trails.
  • Salvo Strike — three matches in a row triggers a 3+ combo bonus: the radar shakes, a white shockwave ring expands from the center, and every active signal on screen is auto-intercepted with bonus points.

4 · Stage mechanics

Nine distinct stages each introduce a new wrinkle: rocket vectors, traffic flow, biological signatures with viral parasites, hexagonal hive scans, drop zones, letter echoes, typewriter signals, and more. The stage list walks through each one.

5 · Tips for new operators

  • Headphones help — the audio cues telegraph signal type and decay timing.
  • Don't chase late signals; missed decays cost more than skipped locks.
  • Chain three quick matches to trigger a Salvo Strike whenever the screen is overloaded.
  • On bio and hive stages, learn to ignore red parasites — locking them costs points.
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