N-Back

A stream of positions and letters flows past. You flag matches with the item N steps back. It trains the buffer every other technique depends on.

Teaches Working-memory capacity and updating

Higher levels switch to harder modes, shown as badges.

1. StartLevel 120 trials · 1-back
2. Level 222 trials · 1-back
3. Level 324 trials · 2-back
4. Level 427 trials · 2-back
5. Level 529 trials · 2-back
6. Level 631 trials · 3-back
7. Level 7Triple33 trials · 3-back
8. Level 8Triple36 trials · 3-back
9. Level 9Triple38 trials · 4-back
10. Level 10Triple40 trials · 4-back