We make engaging puzzle games for your phone
Happen Labs makes logic puzzles for iPhone and Android. Every board has exactly one answer, and you can always reason your way to it — no guessing, no dead ends.
They are free, they work with no signal, and they do not need an account. A plane, a subway, a waiting room: all fine.
Our games
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Sudoku logic with no math. Place one cow per row, per column and per color — never two side by side. Every board has one right answer, and you can always find it.
Moodoku — Download on the App StoreMoodoku — Get it on Google Play -
Jigsaws that actually work on a phone. Sort, snap and settle the pieces at your own pace, with no timer breathing down your neck. Works offline.
Not yet released -
Announcing soon.
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Announcing soon.
About Happen Labs
Happen Labs is an independent studio founded in 2013. We have been making mobile games for over a decade; today we make puzzles, alongside the casino titles we have run since 2015. See every game we have published, or read more about the studio →