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Simon is a memory game built around four coloured buttons — typically red, green, blue, and yellow — each of which lights up and plays a distinct musical tone. The game presents a sequence of these signals one at a time. Your job is to repeat the sequence exactly. After each successful round, one extra signal is added to the end of the sequence, and you try again. The game ends the moment you make a mistake.
Your goal is simply to last as long as you can. Each round is one item longer than the last, so failure is inevitable — the only question is how far you got. The first few rounds feel trivial; by round 8 or 10 most players have to concentrate; by round 15 or 20 the sequence has stopped fitting comfortably in working memory and you start relying on tricks like rhythm, chunking, and verbalization to keep going.
Simon was invented in 1978 by electronic engineer Ralph H. Baer — often called the father of video games — together with Howard J. Morrison, and was manufactured by Milton Bradley. It was a roughly disc-shaped electronic toy with four coloured quadrants that lit up and played a musical tone. Simon became one of the best-selling toys of the late 1970s and early 1980s and is still in production today. Modern recreations — including online and mobile versions — are widely used as informal working-memory tests in cognitive research.
Working memory holds roughly five to seven items at a time. Once the sequence passes five or six signals, raw memorization stops working. The fix is chunking: instead of remembering a flat list like "red-blue-yellow-green-red-blue-green", group it into shorter clusters like "RBY · GRB · G". Each chunk counts as one item in working memory, so you can effectively hold three or four times as many signals.
Chunking takes a tiny bit of practice. The easiest grouping is three signals per chunk because three is small enough to remember as a single mini-pattern. As you get more comfortable, try four-per-chunk for even more capacity. This single technique is responsible for almost all extremely long Simon runs.
Choose your chunking pattern early — within the first 3-4 rounds — and stick with it the whole game. Switching grouping mid-game throws away the structure you've built and almost guarantees a mistake within the next few rounds.
Saying the colour names out loud (or silently in your head) as the sequence plays adds a second memory channel. The visual signal goes into your visual memory; the spoken name goes into your phonological loop — a separate part of working memory dedicated to sound and language. Using both channels at once roughly doubles the effective capacity of working memory for the task.
This trick works especially well combined with chunking. Say each chunk as a short phrase: "red-blue-yellow" becomes "RBY" or even just a made-up sound. The verbalization sticks in memory far more durably than passive watching ever does, and it gives you something to "play back" when it's your turn to repeat the sequence.
Each Simon signal plays a distinct musical tone, and the sequence has audible timing. The fastest path to long runs is to treat the sequence as a short melody rather than a list of separate items. Melodies are stored in long-term musical memory in a fundamentally different way from sequential lists, and they're far easier to recall.
Hum the sequence to yourself as it plays. Match the rhythm of your taps to the rhythm of the original. As the sequence grows, the melody grows with it — and a 20-note melody is much easier to remember than a 20-item list. This is why musicians and people with rhythmic-music backgrounds typically excel at Simon.
A subtle but important habit: keep your eyes on the buttons themselves during playback, not on your hand or finger. Your finger doesn't carry information — the screen does. Visual focus on the source of the signal improves encoding because your attention is in the same place as the stimulus.
This matters even when you're repeating the sequence back, because in fast play the next round starts almost immediately after your final tap. If your eyes are still tracking your finger when the new sequence begins, you'll miss the start of it. Train yourself to tap by feel and let your eyes stay on the screen the whole time.
Desktop: Click the four coloured buttons in the same order the game played them. Wait for the full sequence to finish playing before starting your replay.
Mobile / Tablet: Tap the four coloured buttons in order. The game is fully touch-friendly and the buttons are sized for comfortable thumb tapping.
Keep the sound on if at all possible — each colour has a distinct musical tone, and using the audio cues alongside the visual ones dramatically improves how long you can recall the sequence.
Simon has spawned a wide family of variants and spinoffs, each adjusting one element of the core formula:
The classic 4-colour version is still the best starting point. Once you can routinely pass round 15, try the 6-colour or reverse variants for a fresh challenge.
Publicly reported records for the classic Simon memory game exceed 80 consecutive steps in a single sequence. These are extreme outliers — the vast majority of players cap out somewhere between 10 and 25 steps. Reaching anything above 30 already places you in a small minority. Going beyond 50 generally requires deliberate chunking and rhythmic encoding strategies, not raw memory.
Simon presents an increasing sequence of items and asks you to reproduce them in order. That is essentially the textbook definition of a forward digit-span working-memory test, only with colors and sounds instead of digits. The game maps almost perfectly to the cognitive construct researchers call short-term sequential recall, which is why modern Simon-style tasks are widely used in cognitive psychology research.
The classic finding, often called the magic number 7±2, suggests that average adults can hold roughly five to nine items in working memory at one time. Most studies put the practical average at around seven. With chunking — grouping items into meaningful units — effective capacity can be much higher, but the underlying raw capacity remains around the same.
Simon was invented in 1978 by electronic engineer Ralph H. Baer (often called the father of video games) together with Howard J. Morrison, and was manufactured by Milton Bradley. It was a roughly disc-shaped electronic toy with four colored quadrants that lit up and played a musical tone in sequence. It became one of the best-selling toys of the late 1970s and early 1980s and remains in production today.
Yes, but with caveats. Practice on Simon-style tasks will reliably improve your performance on Simon-style tasks. Whether that improvement transfers to other working-memory tasks (so-called far transfer) is more debated in the research literature, but near transfer to similar tasks is well established. Chunking, verbalization, and rhythmic encoding can also be learned and used immediately to improve scores.
Chunk the sequence into groups of three or four — instead of memorizing a long flat list, remember a few shorter clusters. Verbalize the colors out loud or in your head, which adds a phonological channel to the visual one. Treat the sequence as a melody and use the audible tones as memory cues. Look at the screen during playback rather than at your finger. These four habits together can roughly double your typical longest run.
Put chunking, verbalization, and rhythmic encoding into practice now.
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