Brain Only

Brain Only

In-app purchases

About this game

AI answers everything now. Brain Only gives you a few minutes a day to do the thinking yourself.

Every day there's a new challenge: 5 short puzzles, about a minute each. No AI, no searching, no shortcuts. Just you.

HOW IT WORKS
• 5 puzzles a day, about 5 minutes
• Difficulty adapts: harder after a right answer, easier after a miss
• Stuck? Get a hint after 20 seconds: a nudge, never the answer
• Missed it? One more try, then the answer and why

WHAT YOU'LL TRAIN
🎯 Focus & memory
🧩 Reasoning
🧮 Mental math
🔤 Language
💡 Creative thinking
💸 Money & media

100 puzzles, each with its own animation. Many link to a short "Learn more" page, from the Monty Hall problem to the rule of 72.

WATCH IT ADD UP
• Keep a daily streak going
• See a calendar of the days you played
• Track how you do in each skill over time
• Share your result as a 🟩🟨⬛ grid

Play without an account. Sign in with Google or email to sync across devices.

BRAIN ONLY PREMIUM (optional)
• Bonus round: 5 more puzzles a day
• Unlimited practice by topic
• Review your mistakes
• Weekly hard challenge
• Streak freeze, once a week
Monthly or yearly, with a 7-day free trial on yearly. Cancel anytime in Google Play.

AI off. Brain on.

What’s new

Your daily 5-minute brain challenge: the same 5 puzzles for everyone, no AI allowed. Share your result and see how you did against other players.