Three principles that make words stick

Passively reading a word list creates a false sense of knowing. You recognize the word when you see it, but can't retrieve it when you need it. Active recall forces your brain to pull the answer from memory under time pressure — strengthening the neural pathway every single time.

In our game, you see the Swedish word and must identify the correct English translation among three options flying toward you. No multiple-choice safety net of "which one looks familiar" — you must act fast or lose a life.

The SM-2 algorithm, originally developed by Piotr Wozniak in 1987, calculates the optimal moment to review each word — right before you would forget it. Words you know well appear less frequently. Words you struggle with come back sooner.

This means every second you spend playing is maximally efficient. No wasted time reviewing words you already know perfectly. The algorithm adapts to your personal learning curve.

Games tap into the brain's reward system. When you chain correct answers into a combo streak, collect a power-up, or beat your high score, your brain releases dopamine — the same neurotransmitter that makes social media addictive.

The difference? Here, the "loot" you're collecting is a real skill. Every combo is a set of words permanently added to your Swedish vocabulary. Every level-up means you can understand more of the language around you.