LESS SCROLL.
MORE PLAY.
100%FREE✳
Let your mind wander.
Roll some numbers. Find a pattern. Turn a little break into a little adventure.
NO SIGN-UP. NO DOWNLOADS. JUST PLAY.
oh, hi.☺What’s your kind of play?
All free. Come as you are.
A little less pressure. A little more pleasure.
Wrong turns welcome
Try a hint. Pick again. Every answer comes with a little explanation.
Take your sweet time
No countdown to beat. Stay with a puzzle as long as you like.
Little wins add up
Collect XP as you finish. Leave a little footprint with each daily challenge.
A little food for thought.
How to spot a number pattern
Differences, ratios, and alternating rules: three ways to find the next number.
Small ways to make mental math easier
Make tens and split numbers into friendly pieces, with worked examples.
A five-puzzle break, without the pressure
Start small, use a hint, and take a day off. A guide to the daily challenge.
Curious about something?
Is it really free?+
Yes. All three games and the daily challenge are free. No account or payment card is needed.
Can I play on my phone?+
Yes. Play in a web browser on your phone, tablet, or computer. No app is required.
Where is my progress saved?+
In the browser you are using. Progress does not sync across devices and disappears when you clear browser data.
Is this a brain health treatment?+
BrainOtter offers number and logic puzzles for enjoyment. We do not claim cognitive improvement or disease prevention. It is not an intelligence test or a medical tool.