Diadoku

Diadoku is a quiet logic puzzle I build on my own. The board is a grid split into color regions. Your job: one diamond in every row, column and region, and no two diamonds touching, not even at the corners. There is exactly one solution, so every move can be reasoned out. If you know LinkedIn Queens or Star Battle, you already know the idea.

I'm Ogulcan, a solo developer in Germany. I wanted a calm game for the quiet minutes of a day, and I was also curious how far I could get by building it together with AI. That's how Diadoku came about, and I still work on it alone.

Playing with others

In duels you race another player on the same board and earn trophies. Trophies lift you through leagues from Quartz to Diamond, and every month a new season begins. Each solved level gets a small cheer, and the app runs on iPad too.

Also in the app

A daily puzzle with streaks and bonus hints, levels with rising difficulty, a weekly star league with a leaderboard and crowns, gem avatars, light and dark mode, a spoken tutorial, iCloud sync and 7 languages.

Diadoku is free for iPhone and iPad. Feedback is very welcome in the app under Settings > Feedback.