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
- Numbers event thumbnailMnemonic dictionary
Numbers
Memorize digits 0–9 and type them back
- Cards event thumbnailMnemonic dictionary
Cards
Memorize the order of a 52-card deck
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.
Explore brain gamesLearn Memory Techniques
Step-by-step guides to the memory palace and to memorizing numbers, cards, and more — the techniques behind memory sport.
Browse guidesMemory Blog
Product updates and new features, memory-sport competition news, and notable research on memory and the brain.
Browse the blogMembership
Go deeper into memory sports
PreviewMemory sports training guide
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.
Explore an example dictionary here, make your own copy, and practise your associations through repeated training.
The examples below use English words and explanations. Sign in to make your own copy, then adapt the names and images.
- Two-digit sounds (CV)
- Two-digit Major System
- Two-digit shape conversion
- Single-card sound conversion
- Card PAO conversion
Memory sports training methods
Memory sports are the best way to train your short-, medium-, and long-term memory all at once. In Custom mode, freely adjust the memorize time and recall time to focus your practice on whichever kind of memory you want.
- Working memory (short-term) — Keep both the memorize time and recall time short. Builds the ability to bring back what you just saw instantly.
- Medium-term memory — Short memorize time, long recall time. Practice holding onto information even after a little time has passed.
- Long-term memory — Keep both the memorize time and recall time long. Trains the deep storage that makes memories last.
Within a single session — Split a session into segments and mix several memory techniques. Since the information you memorize first is usually the first to fade, etch it in firmly early on with long-lasting methods (memory palace, spaced repetition), lean on imagery through the middle, and skim quickly at the end to hold the rest in working memory.
Hands-on techniques like the memory palace and spaced repetition are covered step by step in the learning guides. Browse the guides
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 |
|---|---|---|
| 2.0+ | About 2× the global average (with 20-play / 60s gate) | |
| 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
- Memory sports are mental disciplines where you memorise numbers, words, cards, images, and more within a set time limit and recall them precisely. WMSC (World Memory Sports Council) and IAM (International Association of Memory) maintain the international standards; in Korea, KMSL runs the national competitions.
- 11 events in total: numbers, binary, cards, spoken numbers, images, abstract images, names, words, dates, sentences, and tables (book TOC). Nine are playable directly from the home page; sentences and tables are meta events under the Meta tab.
- Seven grades — SS · S · A · B · C · D · F — calculated from the last 30 days using plays (50%) + average score (25%) + average memorisation time (25%). Promotions apply immediately; demotions apply once per day at 23:00 UTC.
- The two modes follow the same big-picture idea, but the penalty math differs by event. Standard scoring is a flat +1 per correct cell across every event, with wrong answers simply scoring 0 and no further penalty. Strict scoring applies the WMSC competition format per event: numbers, binary, and words are scored row by row (40 digits, 30 digits, and 20 items per row respectively) — one wrong answer in a row halves that row's score, and two or more wipe the whole row to 0. Cards and spoken numbers freeze the score at the first wrong answer or blank cell, and anything correct after that point is no longer counted. Images and abstract images are scored in groups of 5; any wrong or blank cell in a group turns that group into -1 (a group that is entirely blank scores 0). Historical dates and sentences ignore blanks and deduct -1 for every two wrong answers. Names & Faces and Table of Contents have a single scoring rule, so the toggle is hidden. Speed mode is locked to standard scoring, except Binary, which uses strict 30-digit row scoring to prevent random-input advantage. Custom mode still lets you choose the scoring method.
- Use the [Multi] button on a home card to create a room, or join from the “Open rooms” list in the sidebar. Free members can play with up to 5; membership tiers raise the cap to 11 / 21 / 31.
- You can delete your own results within 7 days from the [My results] page. Older results are already factored into grade statistics and can no longer be removed.
- Tap the [Print] button on any event card to open a sheet you can save as PDF/PNG or print directly — useful for recall practice on paper. (Spoken numbers is audio-only and not printable.)
Site updates
2026-11-07
Use Ctrl+Enter to finish.
The shortcut for finishing memorization or recall in solo and multiplayer, and for submitting classroom recall, is now Ctrl+Enter. Shift+Enter no longer finishes or submits. Regular Enter cell navigation and arrow keys remain unchanged.
2026-11-06
Invite students with one class link.
Copy the invitation link at the top of the class. Students join automatically after signing in, without registering their emails in advance. Existing participants reopen the class, and personal dictionary and detailed-answer sharing settings stay unchanged.
2026-11-06
Find your next step in class more easily.
Class activities, history and settings are separate, with student progress in the main area. Teachers can observe by default and choose to practise too; ending personal practice is distinct from ending the class round. See the current item and recent action in disclosed conversion training. All 52 cards start selected, and sharing a dictionary from a large image library now works.
2026-11-06
Start with five English mnemonic dictionaries.
Outside the Korean interface, preview English number CV, Major and shape examples, plus card phonetic and PAO examples, then make your own copy. The Korean interface keeps its four Korean examples.