Memory sports,
online and on demand.
10+ memory sport and study events, printable sheets, and real-time multiplayer — the redesigned MemorySports platform with a structured training system.
Memory sports events
Short-term memory test
External linkOpens the short-term memory test on metamind.kr.
Brain Training Games
A collection of brain games that challenge your memory, focus, and reaction speed. Track your scores and compare with others.
Membership
Go deeper into memory sports
Imagery training
Memory sports come down to turning abstract data (digits, letters, binary) into vivid images you can store in long-term memory. A pre-trained imagery table lets the same number trigger a much richer scene every time.
- Shape conversion — Turn the shape of a digit or card into an object that looks like it.
- Sound conversion — Map the pronunciation of a digit or card to a similar-sounding word.
- Major system — Assign consonant sounds per digit, then build words and visualise them.
- PAO system — Pair each digit/card with a person, action, and object to build scenes.
- Memory palace — Lay images along a familiar route to preserve their order.
Imagery training material is available in the Metamind learning notes. Build your own conversion tables and drill them into automatic recall — that's the fastest path.
Overall grade guide
Your overall score is calculated from the last 30 days. Demotions apply once a day at 23:00 UTC, while promotions take effect immediately when a game ends.
Total weighting: Plays 50% / Average score 25% / Average memorisation time 25%. Average score is normalised across the 11 events.
- Plays — counted linearly from 20+; below that it's capped at 1.499.
- Average score — weighted across the 11 events (same weights as the original site).
- Average memorisation time — counted linearly from 60s+; shorter is better.
| Grade | Total threshold | Basis |
|---|---|---|
| SS | 2.0+ | About 2× the global average (with 20-play / 60s gate) |
| S | 1.5+ | About 1.5× the global average (with 20-play / 60s gate) |
| A | 1.1+ | Slightly above the global average |
| B | 0.9+ | Near the global average |
| C | 0.7+ | 70% of the global average |
| D | 0.5+ | 50% of the global average |
| F | 0.5- | Entry level |
Custom content plays and signed-out guest plays are excluded from grading. Detailed grade history is on the My results page.
Memory sports FAQ
Site updates
2026-06-13
Higher print limits for Plus members
The Plus benefit you get for reaching S grade now includes higher print limits — about double the free limit for each discipline.
2026-06-12
Our Terms of Service and Privacy Policy are now in effect
You can read them anytime via the links at the bottom of the site. New signups now confirm they are 14 or older and agree to the terms and the collection of personal data, and existing members will see a one-time consent screen on their next visit. The documents are provided in Korean.
2026-06-12
Your profile is hidden as soon as you request account deletion
During the 30-day window in which you can still cancel, your profile and nickname are immediately hidden from other users — including rankings, recent promotion notices, and multiplayer room lists. Cancel the deletion within that window and everything comes back exactly as it was.
2026-06-10
Six memory games now have time limits
Number Memory, Sequence Memory, Chimp Test, Visual Memory, Digit Span, and Block Span now give you a set time to answer. A bar shows the time left, and running out counts as a miss — so everyone competes under the same conditions. Longer puzzles get more time, and the Chimp Test now also limits memorization time.