A brain playground for kids and grown-ups alike
Chalna is a collection of brain games anyone can start instantly, with no instructions needed. From training reaction speed and memory, to Gomoku and Yut Nori with family, to toddler play for learning colors and clocks — it makes focusing in the moment fun.
What Chalna offers
No sign-up, no login, no app install needed. Just open the link and start. Your records are saved only on your own device. With large text, clear colors, and simple rules, it's designed so anyone — from kids to seniors, and those less familiar with technology — can follow along easily.
45 games in four categories
Cognitive
Games for memory, thinking, and judgment — memory, mental math, attention, color sorting, and more (11 games)
Sensorimotor
Games that use physical reaction and movement — reaction speed, precision, fine motor control, and more (7 games)
Casual Games
Light games to play solo or with family and friends on one screen — the Chalna Series (7 Split Second modes), Gomoku, Stone Flick, Yut Nori, Chess, Janggi, Sudoku, Solitaire, Minesweeper, Reversi, and Nonogram (17 games)
Toddler Play
Play for ages 1.5–7 — Balloon Colors, Coloring, Bubble Pop, Clock Play, Letter Tracing, Maze, Xylophone, Piano Play, Bubble Wrap, and Pop It (10 games)
Every game includes sound and automatically adjusts to your screen, whether on PC, tablet, or phone. You can switch languages (Korean, English, Japanese, Chinese) instantly, and Toddler Play guides kids by voice, so no reading is needed.
Why Chalna
- Useful for senior cognitive training, child development play, rehabilitation support, or family time.
- Training games are short (about 30 seconds to 2 minutes a round), building focus and reaction through repetition.
- No complicated setup — just tap a card to start right away.
- Toddler Play shows no ads, and the exit button only works with a long press so little ones don't leave by accident.
See the game guide with rules and tips for every game →
Terms and limits of responsibility
- Chalna's games and Chalna Timer (clock, timer, stopwatch and break timer) are provided free for personal leisure, learning and everyday reference, with no guarantee of fitness for a particular purpose or uninterrupted availability.
- Times, world clocks, timers and alerts in Chalna Timer are based on your device clock and browser, are for reference and comparison only, and are not an official time standard. Accuracy is not guaranteed, so please do not rely on them where exact time matters — commercial transactions, exams or competitions, working hours, transport, medical care or legal deadlines. Chalna is not liable for any resulting loss.
- Game scores and records are for fun and practice and do not replace medical diagnosis, assessment or treatment.
- All content of Chalna — games, designs, images, text, sounds and code — belongs to Chalna or its rightful owners and may not be copied, distributed or used commercially without permission.
Start today's training right now.
Start playing →