The daily reaction challenge for August 17, 2026 — three reaction rounds, six choice rounds, and ten aim targets, seeded from the date so every player gets the identical gauntlet.
Your score is your total response time plus small penalties for wrong presses and misses, so lower is better. Finish today's challenge to keep your streak; every past day stays playable at its permanent URL.
New here? See how it works. Missed a day? Browse the archive.