Letter Number: Focus Game

Ivan Gast

Contains adsIn-app purchases

About this game

Two rules. One brain. Zero time to spare. ⚡

Letter Number is a fast mental challenge that looks simple — until your brain has to switch gears every few seconds! A number and a letter appear together in a box. Sometimes you judge the number (even or odd?), sometimes the letter (vowel or consonant?) — and the prompt keeps switching!

HOW TO PLAY
• A number and a letter appear together in a yellow box
• Check the prompt: are you judging the number or the letter?
• Number: is it even or odd? Letter: is it a vowel or consonant?
• Answer correctly — and stay focused, because the rule will change at any moment!

THE TWIST
• The rule keeps switching between numbers and letters
• Your brain has to adapt in real time
• Time gets shorter as you progress
• The pace speeds up — how long can you keep up?

WHY YOU'LL LOVE LETTER NUMBER
• Builds extreme focus and mental flexibility
• Trains logic AND reaction speed together
• A true test of concentration under pressure
• Track your progress in the History screen
• Fun, addictive and endlessly replayable

PERFECT FOR
• A quick focus workout before studying or work
• Beating your own reaction-time records on a break
• Players of every age who love a mental challenge

It seems simple at first. Mastering it? That takes serious mental agility.

Download Letter Number now — let's see how far your mind can go!

Thanks for playing and supporting Letter Number — enjoy the game!

What’s new

Fix translation errors
Add history page