A reaction time test measures how quickly you respond to a visual stimulus — from when your eyes detect a signal to when your hand clicks. Results are in milliseconds (ms). Average human reaction time is 200–250ms, while elite gamers achieve 150–200ms.
Our free online test runs 5 rounds, gives ratings from Slow to Legendary, and shows your best, average, and score. No download needed — works on any browser.
| Time | Rating | Who? |
|---|---|---|
| Under 150ms | ⚡ Legendary | Pro esports athletes |
| 150–200ms | 🔥 Perfect | Top competitive gamers |
| 200–250ms | ✅ Great | Above average, serious player |
| 250–320ms | 👍 Good | Casual gamer, average adult |
| 320–400ms | 😐 Average | Most non-gamers |
| 400ms+ | 🐢 Slow | Tired, distracted or first try |
Sleep: Even 1 hour less sleep adds 50ms+ to reaction time.
Practice: Daily reaction tests build neural pathways over 2–4 weeks.
Gaming: Fast-paced FPS games (CS2, Valorant) measurably improve reaction speed.
Caffeine: 100–200mg reduces reaction time by 10–30ms temporarily.
Monitor: A 144Hz+ monitor with low latency reduces visual delay significantly.
The Stimulation Clicker is an aim training game where colorful targets appear at random positions and you must click them before they disappear. It combines clicking speed with spatial precision — the same skill set required in FPS games like CS2, Valorant, and Fortnite.
It is directly inspired by professional aim trainers like Aimlabs and KovaaK's, designed to build mouse accuracy under time pressure.
| Level | Target Size | Lifetime | Best For |
|---|---|---|---|
| 🟢 Easy | 80px | 1.2 seconds | Beginners, warm-up |
| 🟡 Medium | 55px | 0.8 seconds | Standard aim training |
| 🔴 Hard | 38px | 0.5 seconds | Elite aim, comparable to Aimlabs Gridshot |
Predict, don't react: As targets appear, move your cursor toward the next likely zone rather than reacting to each target after it spawns. Targets appear randomly but your anticipation cuts reaction time in half.
Stay centered: Keep your cursor near the center of the screen so you have equal range of motion in all directions. Edge-hugging leaves you slow on the opposite side.
Use Hard mode to train: Hard mode's 38px targets and 0.5s lifetime mirrors professional aim trainer difficulty. Two weeks of daily Hard mode sessions measurably improves your flick-shot accuracy in CS2 and Valorant.
Professional aim trainers like Aimlabs and KovaaK's are the gold standard for FPS training — but they require downloads and setup. Stimulation Clicker fills the gap as a zero-install, browser-based alternative for quick warm-ups.
Hard mode is comparable to Aimlabs' Gridshot scenario in target size and time pressure. For a 5-minute pre-game warm-up, it's highly effective. For serious competitive training, dedicated aim trainers offer more scenario variety and tracking analytics.
A Click Speed Test (CPS Test) measures how many times you can click per second. It's the core benchmark for competitive gaming, especially Minecraft PvP, where raw clicking speed gives a combat advantage. Our free CPS test offers 8 time durations (1s to 100s) and includes Normal and Challenge modes.
| Rank | CPS | Level |
|---|---|---|
| 🐢 Turtle | 1–4 | Beginner |
| 🐇 Normal | 5–7 | Average |
| ⚡ Fast | 8–10 | Good |
| 🐆 Cheetah | 11–14 | Pro |
| ⚡ God Mode | 15+ | Elite |
Standard one-finger method. Best aim accuracy. Sustainable for all durations including 100s.
Tense forearm and wrist to create rapid vibrations. Learnable with practice. Risk of wrist strain — take breaks every 15 min.
Two fingers alternate on the same button. World record: 25.5 CPS (Nestor, 2022). Often banned in competitive servers.
Drag finger across button creating friction micro-clicks. Universally banned in competitive play.
Warm up first: Shake out your wrist and do 10–15 seconds of slow clicking before going for a record. Cold muscles click slower.
Use your index finger only for regular clicking — it's the fastest single-finger technique for sustained CPS over 5+ seconds.
Relax your grip: A tight grip on the mouse increases fatigue and lowers CPS. Hold firmly but not tensely.
Shorter duration = higher peak CPS. Your 1-second score will always be higher than your 10-second score. Use shorter tests to benchmark raw speed, longer tests for stamina.
Polling rate: 1000Hz — registers up to 1000 clicks per second.
Debounce time: 4–8ms — lower is better. Some mice like Logitech G Pro have configurable debounce.
Switch type: Optical switches (Razer, SteelSeries) have near-zero debounce and register faster than mechanical switches.
Technique accounts for 90% of your CPS score. Hardware is the last 10%.
The Spacebar Speed Test measures how many times per second you can press the spacebar. It's popular among rhythm game players (osu!, Beat Saber) and keyboard enthusiasts. Unlike mouse clicking, spacebar speed depends heavily on keyboard switch type and finger placement technique.
Our test supports 8 durations (1s–100s) and counts only new presses — holding down the spacebar does not register multiple presses.
| Presses/sec | Rating |
|---|---|
| 1–4 | 🐢 Slow |
| 5–7 | 👍 Average |
| 8–10 | ⚡ Fast |
| 11+ | 🏆 Elite |
Use your thumb's pad, not the tip: The fleshy pad of your thumb covers more key surface and rebounds faster than the tip. Plant your thumb flat and lift with wrist momentum rather than pure finger movement.
Don't bottom out: Pressing the spacebar all the way down wastes time on return travel. Press just past actuation point and let the switch spring push your thumb back up.
Keyboard matters here more than in typing: A mechanical keyboard with linear switches (Red, Speed Silver) has shorter travel distance and lower actuation force, directly improving spacebar speed by 10–20%.
The verified spacebar speed record stands at approximately 14–16 presses per second for a 10-second test using standard technique. Some claims of 20+ HPS exist but are typically achieved with modified technique or disputed timing.
For rhythm games like osu!, players regularly sustain 10–12 HPS for multiple seconds during streams (rapid consecutive notes). This makes osu! players among the fastest spacebar pressers in the world.
e.repeat detection — only actual new presses count, making the test accurate and fair across all keyboards and browsers.A Typing Speed Test measures your typing speed in WPM (Words Per Minute) and accuracy. The standard WPM formula counts each 5 characters as one "word." Our test uses real English words, tracks correct/incorrect entries, and gives live WPM feedback.
Choose 30s, 60s, or 120s modes. Average typing speed is 40–50 WPM. Professional typists reach 70–100+ WPM.
| WPM | Level |
|---|---|
| Under 30 | 🐢 Beginner |
| 30–50 | 👍 Average |
| 50–70 | ⚡ Good |
| 70–100 | 🏆 Fast |
| 100+ | ⚡ Elite |
1. Learn touch typing first. If you're still hunting for keys, that's the only thing that matters. Touch typing (all 10 fingers, never looking down) unlocks 60+ WPM as a baseline. Resources like Keybr.com or TypingClub teach it in 2–4 weeks of daily 15-minute sessions.
2. Accuracy before speed. Correcting typos costs more time than typing slowly. Aim for 98%+ accuracy and your speed will naturally increase. Turn off autocorrect during practice so mistakes register.
3. Common words are your shortcut. The 100 most common English words account for 50% of all text. Mastering their muscle memory patterns alone takes you from 30 to 55 WPM.
| Profession | Avg WPM | Notes |
|---|---|---|
| Average adult | 41 WPM | 2-finger or partial touch typing |
| Office worker | 55–70 WPM | Daily keyboard use |
| Professional typist | 70–100 WPM | Touch typing mastered |
| Developer / writer | 60–90 WPM | High accuracy requirement |
| Stenographer | 200–300 WPM | Specialized chorded keyboard |
| World record | 212 WPM | Barbara Blackburn, 2005 |
In Coreball, a central core spins continuously. You shoot balls from the bottom — each ball sticks to the core when it lands. The challenge: don't let your ball hit an existing ball already stuck on the core. As you score more, the core spins faster, increasing difficulty.
Tap or click to shoot. You start with 10 balls. Plan your shots carefully — timing is everything.
Watch the gaps: Focus on the spaces between stuck balls, not the balls themselves.
Rhythm shooting: Find the rotation rhythm and shoot in sync.
Don't rush: You have 10 balls — patience beats panic.
Higher levels: Speed increases every 10 points. Adjust your timing accordingly.
Find the rhythm, then shoot in sync. The core rotates at a constant speed. Count the rotation mentally ("1-2-3-shoot") until the pattern becomes automatic. Rhythm shooters consistently outperform reactive shooters.
Target the largest gap, not the next one. As more balls accumulate on the core, look for the two largest adjacent gaps. Aim for the center of that gap — it gives you the most margin for error.
Danger balls demand respect. Red danger balls move faster and reduce your margin. When a danger ball is on the core, slow down and wait for it to rotate to a safe position before shooting.
| Score | Level | Skill |
|---|---|---|
| 1–9 | Level 1 | Learning the timing |
| 10–19 | Level 2 | Consistent timing, above average |
| 20–29 | Level 3 | Good rhythm, handles speed increase |
| 30+ | Level 4+ | Elite — very few players reach this |
The Dinosaur Game (also known as the Chrome Dino or T-Rex Runner) is a classic endless runner. Press Space or tap to jump over cacti and duck under pterodactyls. The game speeds up over time — how far can you run?
This tests your reaction time and rhythm under escalating pressure, making it a fun complement to the reaction time test.
Jump earlier than feels natural. The cactus looks far away, but the dinosaur needs ~200ms to reach jump height. At high speeds, late jumpers always fail. Train yourself to jump when the obstacle is still about 1 character-width away.
Duck under pterodactyls, don't jump. Many players instinctively jump at flying enemies, which often leads to mid-air collisions. Swipe down or press the down arrow to duck — it's faster and safer.
The game speeds up every 100 points. Your mental model needs to constantly recalibrate. After each 100-point milestone, consciously reset your "jump early" threshold.
| Score | Rating | Speed |
|---|---|---|
| 0–500 | 🐣 Beginner | Manageable, single cacti |
| 500–1000 | ✅ Getting there | Cactus clusters appear |
| 1000–5000 | ⚡ Above average | Pterodactyls + night mode |
| 5000–10000 | 🏆 Expert | Maximum speed approaches |
| 99999 | ⚡ Legendary | Score resets to 0 (rare) |
The Number Memory Test challenges you to memorize increasingly long sequences of digits. Each level adds one more digit — starting at 1, going up as far as your working memory allows. You have 3 lives; a wrong answer costs one life and drops you back a level. The number is shown briefly, then hidden — you must type it from memory.
This test directly measures your working memory capacity, one of the most researched cognitive abilities. It's used in IQ tests, psychology research, and neurological assessments worldwide.
| Digits | Level | Population |
|---|---|---|
| 1–4 | 🐢 Below Average | Bottom 25% |
| 5–6 | 👍 Average | Most adults: 5–7 digits |
| 7–8 | ⚡ Good | Top 30% — strong working memory |
| 9–10 | 🏆 Excellent | Top 10% — gifted memory |
| 11+ | 🧠 Exceptional | Top 1% — memory athlete level |
Chunking: Group digits into pairs or triples (e.g. 3-8-4-7-2 → 38, 47, 2). This is how phone numbers are remembered.
Rhythm: Say the number aloud with a rhythm or melody — music memory is stronger than verbal memory.
Visualization: Associate digits with images or locations (memory palace technique).
Practice: Daily training measurably expands working memory span within 2–4 weeks.
Working memory is the brain's "mental whiteboard" — the system that temporarily holds and manipulates information. It's governed primarily by the prefrontal cortex and is one of the strongest predictors of academic and professional performance.
Psychologist George Miller's 1956 paper "The Magical Number Seven, Plus or Minus Two" established that humans can hold 7±2 chunks of information in working memory. Modern research has revised this slightly downward to 4±1 chunks when rehearsal is prevented — but chunking (grouping digits) effectively expands usable capacity back to 7+.
Chunking: Group digits into 2–3 digit pairs. "8-3-7-4-1-9" becomes "83 · 74 · 19" — three items instead of six. This alone can add 3–4 digits to your memory span.
Verbal rhythm: Say the number out loud (or mentally) with a musical rhythm. Melody-based memory is significantly more durable than silent reading. Phone numbers stuck in your head prove this works.
The Major System: Convert digits to consonant sounds, build words, then create vivid mental images. 7 = K/G, 3 = M, 5 = L. With practice, this lets memory athletes remember 50+ random digits.
Snake is one of the most iconic games ever made — a simple concept with infinite replayability. You control a snake that grows longer every time it eats food. The challenge: avoid hitting the walls or your own body, which ends the game instantly.
Use Arrow Keys or WASD on keyboard to change direction. On mobile, swipe in any direction. Tap or press any arrow key to start. Each apple you eat adds 10 points and makes the snake one cell longer. The game speeds up gradually as your score climbs — plan your path ahead to survive.
| Score | Level | Who? |
|---|---|---|
| 0–40 | 🐣 Beginner | First-time players |
| 50–100 | 🐍 Casual | Getting comfortable |
| 110–200 | ⚡ Skilled | Good spatial awareness |
| 210–350 | 🔥 Expert | Top 15% of players |
| 360+ | 👑 Master | Near-perfect routing |
Hug the walls early: In the first 30 seconds, move along the edges. This keeps the center open and gives you more room to maneuver as your body grows.
Think in loops: Plan an S-shaped or U-shaped path that covers the whole board systematically. This avoids dead ends.
Don't rush to food: A longer path to the apple is always better than a short path that boxes you in. Survival beats score optimization at first.
Watch your tail: Remember your tail is moving too — a cell your body occupies now will be free in a few steps. Advanced players use this to thread through tight gaps.
Snake was originally created in 1976 as an arcade game called Blockade by Gremlin Industries. The modern Snake phenomenon exploded in 1998 when Nokia pre-installed it on the Nokia 6110, making it the first game hundreds of millions of people played on a mobile device.
The game trained an entire generation's reflexes and spatial reasoning. Its simple grid-based movement, clear failure state, and addictive "just one more try" loop make it a timeless design masterpiece. Our version adds smooth 60fps animation via interpolation between game ticks, wall boundaries, and difficulty scaling.