Reaction Time Test is a free browser-based visual reaction challenge. Wait for the screen to change, then click, tap or press a key; compare your average and best across five rounds.
Click or tap to start, wait for green, and respond as quickly as possible. Complete five valid rounds to see your results. For keyboard controls, focus the test area and press Space or Enter.
Reaction Time Test was submitted to SlowDen by RykelChen. SlowDen did not make this game - it is published here from the developer's own submission, added on 2026-10-28. It runs in the browser with no download, no install and no sign-up.