Reaction Time Test
HanulOn
Tap the instant it turns green! A reaction lab with Classic, Choice, Targets, a Daily Challenge, ranks, records and badges.
Runs right here on HanulOn. No login needed.
About the game
Hold on red, tap the instant it turns green! How many milliseconds are your reflexes? - Classic: your 5-try average ranks you in 6 tiers from Turtle to Hand of God, with best, slowest, spread and an estimated top % - Choice Reaction: press only the button that matches the arrow or shape — wrong presses add a time penalty - 30 Targets: hit targets popping up all over the screen as fast as you can, with combos - Daily Challenge: the same signal sequence for everyone each day, one official attempt - Bonus modes: Sound Reaction, Hold Back (don't tap on red) and a split-screen 2-Player Duel - Progress graphs, reaction-time distribution, streaks, 18 badges and a shareable result card - Timed precisely from the moment the signal is drawn on screen. Tap early and you go again! - Signals use both color and shape; high contrast, reduced flashing and keyboard support - Leaderboards for Classic 5-try average, Choice Reaction, 30 Targets and the Daily Challenge; records are saved to your HanulOn account
How to play
When the light turns green (filled circle): click / tap / Space / Enter Tap while it's red (hollow ring) and that round restarts Choice Reaction: press the button matching the symbol (keys 1–4 or arrows) 30 Targets: click / tap each target as it appears 2-Player Duel: each player taps their side (keys A · L) Esc: back
Devices: PC · Mobile
Screenshots
These images are examples of what the game looks like.
Leaderboard
30-target time Shorter or lower is better This week's scores only (from Monday)
No scores yet. Be the first!
Play to join the leaderboard with a guest name. Log in to record scores to your account.
Scores from playing on HanulOn are listed, under a guest name if you are not logged in. Scores are reported by the game itself, so the HanulOn team may remove suspicious ones.
Releases
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Reaction Time Test v2.0.0 Current version
Reborn as a reaction lab! - Classic: same scoring rules (your existing leaderboard records carry over). 6 ranks from Turtle to Hand of God, best, slowest, spread and an estimated top % - New modes: Choice Reaction, 30 Targets and the Daily Challenge (same signals each day, one official attempt) - Bonus modes: Sound Reaction, Hold Back and a split-screen 2-Player Duel - New leaderboards: Choice Reaction average, 30-target time and the Daily Challenge - Progress graphs, reaction-time distribution, streaks, 18 badges and a shareable result card - More accurate timing, measured from the moment the signal is drawn - Color + shape signals, high contrast, reduced flashing, reduced motion and keyboard support - Records saved to your HanulOn account (cloud save) and English support
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