Smart gameplay
Clear rules, meaningful decisions, and satisfying discovery.
Independent game studio
We make clever games with personality.
OnJayCo is an independent game studio creating original games built around satisfying mechanics, memorable personality, and thoughtful design.
Original games, thoughtfully made
01 / Our games
Donkeydoko
Find every donkey. No guessing required.
Donkeydoko is a colorful logic puzzle game where every donkey can be found through reasoning—never guessing. Use rows, columns, pastures, and neighboring clues to rule out impossible spaces and discover every donkey. As levels progress, the puzzles grow more intricate while remaining completely solvable through logic.
How it plays
Donkeydoko is a logic puzzle game where every donkey can be found through deduction—never guessing. Each pasture hides exactly one donkey, every row and column contains one donkey, and donkeys can’t touch diagonally. Mark impossible spaces, follow the clues, and work through increasingly challenging puzzles with logically guaranteed solutions. When you’re stuck, intelligent hints don’t just reveal the next move—they explain why it works.
PlatformiPhone & iPad
A new puzzle is taking shape
02 / About
Games should be fun to figure out.
OnJayCo is an independent game studio creating original games built around satisfying mechanics, memorable personality, and thoughtful design. We believe games should be easy to understand, rewarding to master, and polished down to the smallest interaction.
03 / What we care about
What we care about
Original personality
Distinctive worlds, characters, humor, and identity.
Polished experiences
Thoughtful interaction, accessibility, performance, and attention to detail.
04 / Contact
Let’s make contact.
For business, studio, and general inquiries:
Emailhello@onjayco.com
Websiteonjayco.com ↗