IQ Test · 27 Mind Games · High-Score Certificates
Measure your mind.
Certify every victory.
Brain Tease Plus pairs a rigorous 40-question IQ assessment with an arcade of twenty-five advanced mind games — reverse-path recall, dual n-back, change blindness, mental rotation, boolean circuits, motion prediction, time estimation, rule-mutation reflexes, and more. Instant scores, a global top-1000 leaderboard with custom avatars and country flags, one-tap social sharing, and a personalized downloadable certificate for every achievement. 30 minutes free, then one payment unlocks everything forever.
Five domains. One score.
Each attempt draws eight items per domain from a calibrated bank, weighted by difficulty, so no two sittings are identical.
Logical Reasoning
Syllogisms, deduction, and inference — following premises to what necessarily holds.
Numerical Reasoning
Number series, ratios, and quantitative problem solving under time pressure.
Verbal Reasoning
Analogies, vocabulary precision, and relationships between words and ideas.
Spatial Reasoning
Mental rotation, geometry, and reasoning about objects in space.
Pattern Recognition
Abstract sequences and structural rules — the core of fluid intelligence.
The Mind Games Arcade — 27 Challenges
Twenty-seven challenges, and no two share a skeleton: sudden-death shot clocks, bank-or-bust chains, shared error budgets, time-as-health survival, risk dials, forced-pace conveyors, constructive puzzles, live synchronization, hidden hazards, and a global daily word. Every game tracks your personal high score and issues its own downloadable certificate.
How it works
From signup to certificate in under half an hour.
Create your free account
Your name personalizes your certificate; your history saves every attempt on this device.
Complete 40 timed questions
25 minutes on the clock. Move freely between questions and change answers before submitting.
Review your full results
Instant IQ score, percentile rank, domain-by-domain strengths, and every answer explained.
Download your certificate
A personalized, uniquely numbered certificate — yours to save, print, or share. Retake anytime.
Frequently asked questions
How is my IQ score calculated?
Every item carries a difficulty weight. Your weighted performance is converted to a z-score against a reference distribution and mapped to the deviation IQ scale (mean 100, SD 15), with per-domain sub-scores shown alongside.
Is this a clinical IQ test?
No. Brain Tease Plus is a serious, carefully constructed online assessment for educational and personal-insight purposes, but it is not a substitute for a clinically administered instrument such as the WAIS delivered by a licensed psychologist.
What makes the mind games "advanced"?
They're built on tasks used in cognitive research rather than casual puzzles: Dual Pulse is a genuine dual n-back working-memory protocol, Stroop Storm measures interference control, Neon Matrix taxes visuospatial memory span, Math Surge adapts its difficulty to your streak, and Sequence Hunter generates fresh pattern-deduction problems every round. Each one tracks your high score and awards a personalized certificate.
Can I retake the test?
Yes — as often as you like. Each sitting draws a fresh randomized selection from the question bank, and every attempt is kept in your score history with its own certificate.
Is there a global leaderboard?
Yes — a live top-1000 board for the overall total, the IQ test, and every individual game. Pick your own avatar (preset gallery or your own uploaded photo) and your country flag; that's what the world sees next to your score. Your email is never shown.
How does pricing work?
Every account gets 30 minutes of free play across everything. After that, one single payment unlocks unlimited play forever — no subscription, processed securely by Stripe.
Where is my data stored?
Your account, best scores, avatar, and flag are stored securely so the global leaderboard works across devices; passwords are salted and hashed, never stored in plain text. Certificates render locally in your browser. If the site is deployed without its backend, it automatically falls back to device-only accounts.