Learn Morse code as if it were a game.

What is Kreska Kropka?

Kreska Kropka is a browser game for learning International Morse Code. It is made for people who want to actually know Morse – recognise characters by ear and send them cleanly – rather than stare at a chart. It combines a proven learning method with what games do well: short rounds, instant feedback and a little ambition.

The name is Polish for “dash dot”. That is a Morse character itself: –· is the letter N. These two elements are all Morse code ever needs.

How you learn

1. Listen before you read. Every character plays at real speed from the very first lesson. You learn its sound as a whole, like a word, instead of counting dots and dashes – the core of the Koch method.
2. Remember with rhythm. Each letter comes with a mnemonic whose syllables light up in sync with the tone. Stressed syllables are long, unstressed ones short.
3. Send it yourself. Use the Morse key with your finger, mouse or space bar. A meter shows whether your press is turning into a dot or a dash. You set how long a dash has to be – or let the key learn your hand.
4. Put it to use. In the missions you copy real radio traffic: the SOS distress call, amateur radio shorthand, Q codes and the night the Titanic called for help.

24 lessons, one step at a time

The learning path starts with K and M and adds one to three characters per lesson – first the alphabet, then digits and punctuation. Each lesson takes a few minutes and mixes eight exercise types: pick what you hear, read patterns, assemble patterns from dot and dash buttons, key characters yourself, and copy groups and real words. Mistakes come back at the end of the lesson, and a review mode drills the characters you find hardest.

The speed round: Morse on a beat

Sixty seconds, characters coming in, you tap the answer, streaks raise your multiplier. Underneath runs a minimal beat – Pulse, Ticker, Break or Machine – and every character lands exactly on the beat. You set the tempo in BPM; one beat equals eight dot lengths, so the code sits perfectly on the grid. As time runs out the background glows red and starts to glitch. Prefer no pressure? Endless mode lets you choose which characters to practise.

And there is more

• Sound pairs: train characters that sound alike – A and N are mirror images, S and H differ by one dot.
• Radio station: key freely while a decoder writes along, or translate text and play it as tone and flashing light.
• Sending coach: key a word and see your timing as a piano roll above the ideal rhythm, with concrete tips.
• Streak, daily goal and levels: small nudges to keep going – with Morse, regular practice beats long sessions.

Your data stays with you

No account, no ads, no tracking. Progress and settings live only in your browser’s storage. After the first visit the game works offline and can be installed to your home screen.

Read on

FAQ

What does Kreska Kropka mean?

Kreska Kropka is Polish for “dash dot”. That is a Morse character itself: –· stands for the letter N.

What is the best way to learn Morse code?

Use the Koch method: start with two characters at full speed and only add a new one when the previous ones are solid. Learn every character as a sound instead of counting dots and dashes.

Is Kreska Kropka free?

Yes. It is free, without ads and without an account. Your progress stays on your device.

Does it work offline?

Yes. After the first visit it runs without an internet connection and can be added to your phone’s home screen like an app.

Is the game available in English?

The game interface is German at the moment. The guides on this site are available in English, and an English version of the game is in the works.

What is Farnsworth timing?

Characters are sent at full speed, but the gaps between them are stretched. You learn the sound of each character while still getting time to recognise it. The gaps shrink as you improve.