Free browser-based cognitive games that measure attention, memory, executive function, and processing speed. No sign-up required.
Switch between two response rules under time pressure and track how efficiently you adapt to rule changes.
Measure simple visual reaction time — how quickly you detect a green signal and commit a motor response across multiple trials.
Respond to a center arrow while distracting flanker arrows compete for your focus, measuring executive attention and interference control.
Hold digit sequences in memory and repeat them forward and backward, testing verbal working memory span and active manipulation.
Remember where numbered tiles were, then tap masked positions in ascending order — a classic test of visuospatial working memory.
Name the ink color while ignoring the written word to measure cognitive control and resistance to automatic reading interference.
Repeat spatial sequences by tapping blocks in order, measuring your visuospatial working memory span through increasing difficulty levels.
Respond quickly to Go signals while withholding responses to No-Go signals, measuring response inhibition and impulse control.
Study a grid of highlighted squares and recreate the pattern from memory as grid size and target count increase.
Continuously compare current stimuli to items from N steps back, measuring working memory updating from 1-back through 3-back difficulty.
Infer abstract visual rules from pattern matrices and select the choice that completes the underlying relationship.
Connect numbered circles in order (Part A) then alternate between numbers and letters (Part B) to measure cognitive flexibility.
Detect the subtly different swatch within a grid of similar colors across 12 rounds of shrinking hue differences.
Track several moving target objects among identical distractors, then identify the original targets after motion stops.
Distinguish new words from words seen earlier in the sequence, measuring verbal episodic recognition memory under increasing interference.
Select the correct response as the number of choices increases from two to four to six, measuring decision speed under response competition.
Complete two sequential decisions per trial — categorize a stimulus then make a follow-up choice based on the first outcome.
Infer hidden classification rules from stimulus pairs and adapt when rules change between blocks, testing rule induction and pattern recognition.