Signal Corps · 1939–1945
Learn Morse code through an immersive WWII training program. Tap a telegraph key, decode wartime transmissions, and rise through the ranks from Recruit to General.
Free. No ads. No in-app purchases.
From zero to fluent
No prior knowledge required. 14 structured lessons teach you every letter and number through hands-on drills with a realistic telegraph key. Each lesson builds on the last — by graduation, you'll be decoding full sentences in real time.
Every mode, a different challenge
Graduate Boot Camp and your real deployment begins. Four distinct game modes test speed, accuracy, and nerve — each inspired by actual wartime radio operations.
Decode authentic WWII dispatches letter-by-letter using a telegraph key. Three difficulty tiers — from routine traffic to timed flash missions where one wrong letter ends the transmission.
An enemy transmission comes through — a single 5-letter word in Morse. Listen carefully, decode what you hear, and crack the word in 5 attempts or fewer.
Decode Morse clues to defuse a multi-stage bomb before time runs out. Cut wires, press buttons, flip switches — each instruction arrives as a coded signal. Wrong move costs you precious seconds.
Incoming messages pile up on a typewriter faster than you can decode them. Earn power-ups to stay alive, but the pace never stops accelerating. How long can you hold the line before the signal overflows?
21 ranks from Private to General
Complete missions, earn XP, and climb the ranks. Every promotion brings you one step closer to the top.
Built to teach. Designed to obsess over.
Learn international Morse code — the same system used by militaries, ham radio operators, and aviators worldwide.
Messages inspired by WWII Signal Corps, Royal Navy, RAF, and US Marine transmissions.
No ads. No in-app purchases. No premium tiers. Every mode, every rank, every message — yours from day one.
Your enlistment papers are ready. Boot Camp starts now.
Free. No ads. No in-app purchases.