Brain Training Games
Free science-inspired mini games for memory, attention, mental math and reaction speed. Play instantly in your browser — on your phone or your computer.
Start trainingSort Shift
All brain training games
Memory Match
A free online memory game — flip the cards and match every pair.
Play → AttentionSchulte Table
Find numbers 1–25 in order as fast as you can.
Play → MathQuick Math
Solve as many sums as you can in 60 seconds.
Play → ReactionReaction Time
Tap the moment the screen turns green.
Play → MemoryNumber Memory
Remember a number that grows one digit each round.
Play → MemoryGrid Memory
Memorize the lit tiles and tap them back.
Play → MemoryWho’s Home?
Watch who walks into the little house and who walks out, then say how many are still inside.
Play → AttentionQuick Glance
A critter flashes on the stump and its twin in a bush, then both hide. Tap where the twin was.
Play → SpatialSnug Fit
Every piece in the tray has been turned. Tap the one that fills the gap in the wall.
Play → LogicWater Sort
Pour the colors into separate bottles, one satisfying move at a time.
Play → LogicNonogram
Read the row and column clues to uncover a hidden pixel picture.
Play → AttentionSort Shift
Toys roll down the belt. Sort each one by colour, shape or size, as the sign says right now.
Play → LogicTrios
Pick three cards where colour, shape, number and shading are each all the same or all different.
Play → SpatialTangram
Seven flat pieces and one dark shape. Drag them on, tap to turn, and fill it with no gaps.
Play →Why brain training?
Your brain loves a challenge. Short, focused exercises — remembering positions, finding numbers, doing quick math — engage memory, attention and processing speed, the core skills you use every day at work and at school.
JuJu Games keeps every workout under a few minutes, tracks your personal bests on your device, and gets better every week thanks to player feedback. No account, no install, no paywall.
Frequently asked questions
Are these brain games really free?
Yes. Every game is free to play in your browser, with no account or installation required.
Do the games work on mobile phones?
Yes. Every game is designed for both touch screens and desktop, and adapts to any screen size.
How often should I train?
Short and regular beats long and rare: a few minutes a day across different games (memory, attention, math, reaction) is a great routine.
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