About Backbeacon: Signal Watch
Take a self-paced shift at a little 3D signal station. Remember a rolling sequence of letter signals and decide whether each new one matches the signal N turns earlier. Easy uses 1-back, Medium 2-back, and Hard 3-back. Play 60 shifts per difficulty, with warm-up signals, accuracy feedback, hints, sound, and saved stars.
How to Play Backbeacon: Signal Watch
Study each signal. During the first N warm-up signals, press Remember and next to begin your memory window. Then choose Same if the current letter equals the letter exactly N turns earlier, or Different otherwise. Keys S and D answer Same and Different; Space advances a warm-up signal. The game waits for you, with no timer. Easy compares one turn back, Medium two turns back, and Hard three turns back. Reach at least 80% accuracy to complete a shift; perfect accuracy earns three stars, 90% earns two, and using hints earns one. There are 60 shifts per difficulty with longer sequences as you progress. Hint supplies the current decision, Reset repeats the shift, and the musical note mutes sound.