What is MIKIRI — free reflex & vision games
MIKIRI is a collection of split-second reflex games: FLASH, MATCH, the read-ahead reaction game NEXT, FOLLOW, the hidden-trajectory prediction game INTERCEPT, OFFBEAT, MIRAGE, GATEFALL, the selective visual-memory game BLINK HUNT, NAGARE, where you read a number as it sweeps past, and four number games: ZANZOU (number position memory), ANZAN (flash mental math), RENBAN (number order tapping) and SENKO (catch the gold digit). Everything is free, runs in your phone or desktop browser with no signup, and every mode has weekly and all-time world top-100 leaderboards.
The fifteen games
- 👁 FLASH — dynamic vision test: numbers flash from 0.5s down to 0.02s
- ⚡ MATCH — number match sprint: tap the identical number, +1s per miss
- ◉ NEXT — read-ahead reaction test: tap each circle while its gap cues the next location
- 👀 FOLLOW — eye tracking: track one dot through a shuffle of up to 18
- 🎯 INTERCEPT — trajectory sniping: predict where the cloaked target is right now and snipe it
- 🥁 OFFBEAT — rhythm sense test: find the one off-beat dot (🔊 sound on)
- 🌀 MIRAGE — beat the illusion: pick the truly-bigger/longer/darker despite optical illusions
- 🪨 GATEFALL — read-ahead gate puzzle: memorize gate stones, avoid forbidden ones and cut only the right targets
- ✨ BLINK HUNT — selective visual memory: remember only the lights that match the rule
- 🚄 NAGARE — read the passing number: read a number as it sweeps across the screen, then type it
- 🔲 ZANZOU — number position memory: tap where the vanished numbers were, from 1 upward
- 🧮 ANZAN — flash mental math: add up numbers flashed one after another
- 🔢 RENBAN — number order tapping: tap 1, 2, 3… as fast as you can (Schulte table)
- 🌟 SENKO — gold number catch: catch the gold digits in a rapid stream
- 🎵 KIZAMI — rhythm copy: tap back the rhythm KIRI plays (offbeats, triplets, quintuplets)
⚡ Reaction Time Test — measure now
🏎 F1 Reaction Test — start lights
🎯 Aim Test — targeting speed & accuracy
🔢 Number Memory Test — set your own digits & time
🎨 Stroop Test — color-word interference
As vision training
Each game adapts a vision-training, sports-vision, or cognitive task format (tachistoscope, visual search, smooth pursuit, temporal occlusion, rhythm deviation detection). Use your daily best as a practice log — no medical benefit is claimed or guaranteed.
📖 Guide: Reaction Time: What's Average & How to Improve
📖 Guide: Dynamic Visual Acuity vs Vision Training: What's the Difference?
📖 Guide: How to Improve Your Reflexes (Honestly)
📖 Guide: 7 Free Reaction Time Tests, Compared
📖 Column: Does brain training work? What the research shows
📖 Column: What science says about dementia prevention — 14 risk factors
📖 Column: Forgetfulness vs dementia — when to seek help
📊 World player statistics (level distributions)
FAQ
- Is it really free?
- Completely free, no signup, browser only.
- How do rankings work?
- Per mode: best level, clear time, or furthest round. Weekly and all-time world top 100 are public.
- Which languages are supported?
- 17 languages: Japanese, English, Chinese, Korean, Spanish, Portuguese, Indonesian, French, Thai, Vietnamese, Turkish, Dutch, Polish, Hindi, Persian, Arabic and Russian.
No strobe-like flashing effects are used, but please avoid playing when feeling unwell.
