Simon Says

Watch the pattern of colors and sounds, then repeat it. Each round adds one more to the sequence.

About this game

Simon Says is a reaction-time / fast-input game in the Ice Cheetah library. Reaction games test how quickly you can recognize a stimulus and respond with the right input — keyboard, click, or tap depending on the variant. The most basic version measures milliseconds between cue and click; advanced variants add color discrimination, sequence memory, or directional input. There is no real-money wagering. Sessions track personal-best reaction times and accuracy across runs.

How to play

  1. Click or tap to start. The instructions vary per variant; read the in-game overlay.
  2. Wait for the cue (color change, sound, sprite appearance) then react with the prescribed input.
  3. Most variants run multiple trials per round and report the average + best.
  4. Inaccurate or premature inputs penalize the score in most variants.

Tips and strategy

  • A relaxed neutral-input position is faster than a tense one — don't grip the mouse.
  • Reaction times under 200ms are exceptional; 250ms is solid; 350ms+ has room to improve.
  • Sleep, caffeine, and hydration affect reaction time more than practice does for adult players.

History and context

Reaction-time games have an experimental-psychology lineage going back to F. C. Donders (1860s), who first measured "mental chronometry." Arcade games (Track & Field, 1983) translated the format into pop culture, and modern web-based reaction tests are used in everything from sports training to cognitive research.

Free to play. Simon Says is part of the Ice Cheetah Gaming House library — 74 free browser games across nine categories. No real-money wagering, no signup, no downloads. Play instantly in your browser.