Quick Reflex Tester от Duris

Quick Reflex Tester is a lightweight game designed to test your reaction speed. The game challenges you to click a button as soon as the screen changes color. The faster you react, the better your score. The extension also records your best reaction time, allowing you to track your improvement over multiple attempts. It's a fun way to pass time while sharpening your reflexes, all within your browser.

This game is perfect for those looking for a quick challenge or to test and improve their reaction times. With a simple interface and no complicated mechanics, it’s easy to play anytime.