Free Brain Tests to Play in Your Browser

Each of these brain tests turns one narrow skill into a number you can track. Five of them are memory games: they ask you to hold digits, words, a sequence of taps, a pattern of squares or the position of numbers in mind for a few seconds. The other three are about speed: how fast you react to a signal, how quickly you hit targets, and how fast and accurately you type.

The idea is simple: short, focused tasks with clear results you can repeat. Compare a morning attempt with an evening one, a mouse with a touchpad, or this week with last month. All of our brain tests follow the same approach: quick to play, easy to understand, and honest that a single score is a snapshot of one moment.

The memory brain tests start with the number memory test, which shows a number for a few seconds and asks you to type it back, adding one digit after every correct answer. The verbal memory test shows one word at a time, and you decide whether it has already come up in the run. The sequence memory test lights up tiles on a 3×3 grid, and you repeat the pattern, which gets one step longer every level.

The visual memory test flashes a pattern of squares on a grid that grows as you level up, and you tap the squares that were lit. The chimp test, inspired by a well-known study with young chimpanzees, hides the numbers as soon as you click the first one, so you have to remember where the rest were. Each memory game ends after a mistake or a few lost lives, and your best score is saved on this device.

In the reaction time test you wait for the panel to turn green, then click, tap or press Space as fast as you can. After five rounds you get your average, your fastest and your slowest time. Most adults typically react to a simple visual signal in roughly 200 to 300 milliseconds, and your screen and mouse add a little delay of their own.

The aim trainer shows 30 targets one at a time at random spots on a board. Your score is the average time per target, and clicks that miss are counted so you can see your accuracy too. It makes a quick warm-up before a shooter and a fair way to compare a new mouse, a different sensitivity or a touchscreen.

Pick 15, 30 or 60 seconds and type a short passage as quickly and accurately as you can. When the time is up, you see your speed in words per minute and your accuracy, the share of characters you typed correctly. Only correct characters count toward your speed, so a clean run usually beats a rushed one.

Short runs are good for warming up or checking your peak speed, while a full minute gives a steadier picture of how you type day to day. Passages come in English, Portuguese and Spanish, and taking the test now and then is an easy way to notice progress while you learn to touch type.

The brain tests on this site are online skill games for fun and self-tracking. They measure narrow, specific skills, and your result depends on your device, your mood and how well you slept. They are not designed to say anything about intelligence, memory health or any medical condition, and they are not a diagnosis.

If you are looking for a cognitive screening because you or someone close to you has noticed changes in memory, attention or thinking, the right step is to talk to a doctor. A doctor or a neuropsychologist can run validated assessments and look at the whole picture, something no quick online game can do.