OddOne

A hidden rule in every grid. Find the tile that breaks it - 100 levels, arcade runs, endless lives, and a daily puzzle the whole world shares.

Every grid hides a rule - one tile breaks it. Can you spot the odd one out?

Odd One is a calm, minimalist brain-training puzzle. Look closely: shapes, colors, sizes, counts. Three of a kind follow the pattern, one quietly doesn't. Tap it.

FOUR WAYS TO PLAY • Classic - 100 handcrafted and generated levels, no timer, pure logic. Grids grow up to 5×5 as you climb. • Arcade - a 60-second time bank. Solving adds seconds, mistakes cost them. How far can you go? • Endless - three lives, no clock. Pick your difficulty and settle in. • Daily - five puzzles, the same for everyone on Earth, once per day. Your time is your score. Keep the streak alive.

MADE WITH CARE • No ads. No tracking. No account. Completely free. • Optional Game Center leaderboards and iCloud sync • English, German, French, Italian, Spanish • Light & dark mode, subtle haptics, calm piano soundtrack • Color-assist mode for color-blind players • Works beautifully on iPhone and iPad

If you enjoy Odd One, you can leave a small tip - it unlocks nothing, it just keeps the game free for everyone.

An earls studio game.