numbers flash, then vanish — tap them back in order, 1 to N
memorize — then tap 1 → 4 in order
About
The chimp test is the famous working-memory challenge from Kyoto University's Primate Research Institute, where a young chimpanzee named Ayumu memorized the positions of nine numbers after seeing them for just 650 milliseconds — beating university students at their own game. Dialed GG Chimp brings that experiment to your browser: numbers flash on a grid, vanish, and you tap them back in order from 1 to N before the clock runs out.
Each round adds more numbers and gives you less time to look. Five rounds make a game, scored out of 50. One wrong tap ends the round at zero — exactly like the original, where a single misstep costs the sequence.
Built for anyone searching chimp test, chimpanzee memory test, or a number memory game to see whether their spatial working memory can hang with Ayumu's.
How It Works
Numbers appear scattered on a grid for a brief moment. Soak in both positions and order — they are about to disappear.
The grid goes blank. Tap the cells in ascending order — 1, 2, 3… One wrong tile breaks the sequence and ends the round at 0.
Speed is score. Recalling the full sequence instantly earns up to 10 points; slower recalls keep fewer. Five rounds, max 50.
Difficulty
Two dials turn as you progress. The number count grows — from 3 up to 7 on Easy and 4 up to 8 on Hard, which sits right at the edge of typical human spatial working-memory capacity. And the flash gets shorter: from 2.2 seconds down to 1.4 on Easy, and from 1.6 down to just 0.8 seconds on Hard — barely slower than Ayumu's 650 ms.
Hard also spreads the numbers across a bigger 5×5 grid, so positions are farther apart and harder to encode in one glance. The final round — eight numbers, 0.8 seconds — is a genuine working-memory stress test.
Game Modes
Practice alone on Easy or Hard. Replay freely to push your working-memory span.
Share a link. Same five seeded grids — a fair memory face-off.
One Hard set per day, worldwide. One attempt. Post your score to the leaderboard.
Benefits
This is the actual task from Matsuzawa's Kyoto studies (2007). You are measuring your spatial working memory with a proven paradigm.
Unlike our Color or Size games, Chimp forces you to encode where things are AND what order they follow — the double load that makes it hard.
Seeded rooms mean friends get identical grids. Winner is memory, not luck.
No signup, no login wall to save scores. A full game takes about two minutes on any device.
FAQ
A spatial working-memory game: numbers flash briefly on a grid, vanish, and you tap their positions in ascending order (1 → N). It comes from Kyoto University research where the chimpanzee Ayumu outperformed humans. Five rounds, scored out of 50.
On the classic version, most people reliably reach sequences of 4–5 numbers; 7+ is exceptional. Here, above 40/50 overall is excellent, and clearing the final 8-number Hard round puts you in rare company.
Yes, with practice. Ayumu's edge was speed at 650ms exposures and came from years of training. Humans who train can close most of the gap — which is exactly what Solo mode is for.
Easy runs 3 to 7 numbers on a 4×4 grid with 2.2–1.4s to look. Hard runs 4 to 8 numbers on a 5×5 grid with just 1.6–0.8s to look and a tighter recall clock.
Recalling the full sequence instantly earns up to 10 points per round; slower recalls keep fewer (down to 2). A wrong tile or timeout scores 0 — one break ends the round, like the original test.
Color remembers a hue, Size remembers a scale — one value each. Chimp memorizes several positions AND their order at once. It is a working-memory load test, not a single-value recall test.
Yes — Multiplayer creates a shareable link so everyone gets the same five grids. Same numbers, one winner.
Five rounds. Numbers flash and vanish. Free, no signup, any device.