Play Signal Lost online for free — a one-key rhythm game set aboard the drifting research vessel Korner-7. The crew is gone and the ship is dying, but the comms array still crackles with Morse code. Tap a single key to match each incoming signal, then send letters back from memory as the prompts fade away. It starts as pure rhythm and slowly teaches you real Morse code without you even noticing. Work through twelve story missions across three failing ship systems, then test your nerve in endless Survival mode. No download needed — play instantly on desktop or mobile.

• Press and release Space (or tap the big telegraph key) to send Morse
• A quick tap is a dot (·), a longer hold is a dash (–)
• Match rounds show you the pattern — copy it to lock the signal
• Send rounds hide the pattern — key the letter from memory
• Keep Signal Integrity above zero; wrong symbols cost you
• Clear all 12 missions, then chase a high score in Survival