How to play Reaction Duel

Reaction Duel is a pure reflex test. Both players stare at the same signal and wait — the fastest clean tap after GO takes the round.

Rules

Each round starts with a waiting phase of random length, roughly one to three seconds. When the screen switches to GO, the first player to tap scores a point. Tapping during the wait is a false start and gives the point to your opponent. The first player to 5 points wins the match. Because the delay is random every round, rhythm-guessing does not work.

Controls

Tap or click the play area when GO appears. Keep your finger still while waiting.

Tips

Watch for the colour change rather than guessing the timing — the wait is random every round. Rest your finger just above the screen so a single short tap is all you need.

Reaction Duel FAQ

What is a false start?

Tapping before GO appears. It immediately gives your opponent the point and starts the next round.

How many points win a Reaction Duel?

Five.

Is it fair online if my connection is slow?

The server judges who tapped first, so a very slow connection can cost you close rounds — Local vs on one device removes network delay entirely.