トンツー

TONTSU is an arcade-style casual game where you can learn Morse code while having fun.

Shoot down the letters and numbers falling from the top of the screen by entering Morse code!

How to Play

Tap → Dot Long press → Dash Swipe → Quick dash input

Enter the correct Morse code to make the characters disappear! Keep answering correctly to build combos and multiply your score.

Features

Retro 8-bit style graphics with CRT scanline effects Learn all Morse codes for A–Z and 0–9 step by step Difficulty increases based on your score, including falling speed and character variety Real communication terms such as SOS and MAYDAY appear in the game EXPERT Mode: Test your skills with Morse code hints hidden Beginner-friendly tutorial included