Signal//Lock unlocks new stage mechanics as you progress. Each one teaches a new way to read the radar — vectors, hexes, biological signatures, typewriter echoes, drop classes. Below is the full public roster.
- S01
Basic Signals
The training stage. A clean radar, a few signals, no surprises. Lock matched pairs to learn the rhythm of the sweep.
- S02
Speed Pressure
Same rules, faster sweep. Signals decay quicker — the basics get sharper. A real warm-up.
- S11
Missile Vector
Vectored signals: each rocket has a heading. Match incoming missile pairs before their trajectories cross your sector.
- S12
Traffic Vector
Civilian traffic mixes with hostile signals. Match traffic-class pairs only — and don't engage the wrong icon.
- S69
Bio Lock
Biological signals with heartbeat signatures. Match same-species pairs while filtering out parasitic infections.
- S76
Hive Scan
A hexagonal grid replaces the open radar. Letters land in cells; lock matching pairs across the comb.
- S63
Drop Zone
Match same drop-class signals. Red Vipers are decoys — ignore them or pay the points cost.
- S42
Letter Echo
Signals carry letters. Lock matching letter pairs (A↔A) across the radar before the echo decays.
- S58
Typewriter Signal
A teletype types in transmissions one character at a time. Decode and lock the matching letter before the carriage returns.
- S40
Ring Scan
Concentric ring guides replace the open radar. Letters snap to fixed ring/segment slots — match identical glyphs as the sweep cone illuminates each arc.