🧠 N-Back
Flag when the symbol matches the one N steps back. A working-memory trainer.
LEVEL
ROUND 0/25SCORE 0BEST 0
How to play N-Back
- Choose a level — 2-back is the classic challenge — and press New Run.
- A symbol appears each round for a couple of seconds.
- Press Match (or the Space bar) when it is the same as the symbol N rounds ago.
- Do nothing when it does not match. Score climbs with correct calls over 25 rounds.
Controls
| Input | Action |
|---|---|
| Match button / Space | Call a match |
| (do nothing) | When it is not a match |
| Ctrl+F | Enter or leave full screen |
Tips & strategy
- Hold a short rolling list in your head — the last N symbols — and compare the newest to the oldest.
- Only press when you are sure; a wrong call costs a point just like a miss.
- Say the symbols to yourself to keep the sequence from slipping.
- Master 1-back first, then step up — 3-back is genuinely hard.
Frequently asked questions
What is the N-back task?
A working-memory test: decide whether the current item matches the one shown N steps earlier. It is widely used in cognitive training research.
What does the level change?
How far back you must remember — 1-back compares to the previous symbol, 3-back to three ago.
How is my score tracked?
Your record is the highest score in a 25-round run, saved per level.