Mercutio

A premium reaction timer. Watch the animated shape — click the instant it turns green. Five rounds, global leaderboard.

by mercutio

Memorize a Lissajous figure — a parametric curve formed by two sine waves — then tune it back after it is scrambled. Drag horizontally to adjust the frequency ratio, drag vertically to adjust the phase. How precisely can you restore the original pattern?

by mercutio

A color memory game. Study a photo's tone for 5 seconds, then restore it after a color shift is applied — across 5 rounds. Scored on how precisely you match the original.

by mercutio

Learn Morse code by ear and touch. Tap for dots, hold for dashes. Three difficulty levels — from the simplest six letters to full alphabet and digits with speed bonuses.

by mercutio