Puzzle

Simon Says

🎮 Single Player📱 Mobile Friendly⚡ Instant Load

Simon Says is a memory sequence game that challenges your short-term memory capacity. The game presents a sequence of colored lights (red, blue, green, yellow) that plays automatically. After the sequence finishes, you must repeat it by tapping the colors in the exact same order. Each successful round adds one more step to the sequence, making it progressively harder to remember. The game ends when you make a mistake in the sequence. Your score is the number of steps in the longest sequence you successfully completed. This classic memory test was originally popularized by the Simon electronic game in 1978, and it remains one of the most effective measures of working memory capacity.

The average adult can reliably remember a sequence of 7-9 items. Sequences longer than 9 steps require chunking strategies — grouping multiple steps into a single mental unit. For example, instead of remembering "red-blue-green-yellow-red-blue" as six separate items, you can remember it as "RGB-YRB" (two chunks of three). The game's tempo is deliberately paced at one color per second, which research has shown to be the optimal speed for working memory encoding. The four colors are positioned as quadrants on a circular layout, making spatial memory a complementary encoding channel. Your best score is saved to localStorage. The game is built with DOM elements and CSS transitions rather than Canvas, making it accessible to screen readers and keyboard-only users. Each color press triggers a distinct tone via Web Audio API, providing auditory feedback that reinforces the visual sequence.

Controls

Click/Tapto interact

Designed for both desktop and mobile play. Touch-friendly interface.

Strategy Guide

Simon Says tests your auditory and visual short-term memory. Each round adds one step to a sequence. The average adult can hold 7±2 items in working memory, but Simon's additional demand of spatial-location recall reduces this to about 8-12 steps. The optimal memorization technique: assign each color a one-syllable label (Red=R, Blue=B, Green=G, Yellow=Y) and silently repeat the sequence as a string of letters. This leverages phonological looping — your brain's natural mechanism for holding verbal information. The sequence generator avoids repeating the same color more than twice consecutively, so triple-color patterns are decoys you should not expect. Expert players reach 15+ steps by chunking — grouping 3-4 notes into a single mental unit (RGB, YBG, etc.). The game's timing speeds up after step 10, reducing the interval between notes from 1 second to 0.6 seconds.

Play Tips

The letter-coding technique (R/B/G/Y) works, but grouping into chunks is faster. Instead of remembering R-G-B-Y-B-R-G, group it as RGB-YBR-G and remember three visual "blocks" instead of seven individual notes. The brain's working memory holds 7±2 items, but chunks count as single items. With chunking, most people can memorize sequences of 15+ steps. Practice chunking by starting each new round before the sequence plays — silently categorize the first 3 notes as a group, the next 3 as another group, and so on for as long as the pattern lasts.

Technical Note

Technical note: color sequences are generated using a uniform random distribution with a constraint that no color repeats more than twice consecutively. The sequence display uses setTimeout with decreasing intervals (1000ms base, -40ms per step). Audio tones are generated via Web Audio API oscillators with frequencies: Red=262Hz, Blue=330Hz, Green=392Hz, Yellow=523Hz. The working memory model tracks player accuracy per sequence length.