Brain Games
Eight free, focused tools, each measuring one specific cognitive skill: reaction time, memory, processing speed, and more. No sign-up, instant results.
Reaction Time Test
Click as fast as you can when the box turns green. Five rounds, averaged.
Number Memory Test
How many digits can you hold in short-term memory? Each round adds one.
Visual Memory Test
Remember highlighted grid tiles and recall their positions from memory.
Stroop Test
Name the ink color, not the word. Measures cognitive flexibility.
Chimp Test
Numbers flash briefly, then hide. Click them back in order, from memory.
Processing Speed Test
Match symbols to numbers as fast as you accurately can in 60 seconds.
Pattern Recognition Sprint
Identify what comes next in a visual sequence, as quickly as possible.
Caffeine Cutoff Calculator
Find the latest time to have caffeine for good sleep and cognitive performance.
Why Separate, Single-Skill Tools?
Our main 36-question IQ test gives you one composite score across four reasoning categories. These games go a level deeper: each isolates one specific skill, like raw reaction speed or working memory span, so you can see exactly where your strengths are, independent of a bundled score.
Play any of them as often as you like. As with the main test, treat the results as a snapshot of performance on that day, not a fixed, permanent measurement.