Learn how spaced repetition algorithms force your brain to remember information right before you forget it.
Spaced repetition is an evidence-based learning technique that is usually performed with flashcards. Newly introduced and more difficult flashcards are shown more frequently, while older and less difficult flashcards are shown less frequently in order to exploit the psychological spacing effect.
Recall Runner uses standard SRS algorithms under the hood, but abstracts away the UI into a seamless 3D game. You don't click "Hard" or "Easy"; the game automatically schedules your next review based on your performance speed and accuracy in the game.