Prime Number Puzzle: Sokyo

Tap prime numbers and trigger satisfying chain reactions. Use multiplication and division instincts to clear the board and chase a high score in quick puzzle sessions.

Tap a red number. Pop! It splits, chains, and the board clears away — and honestly, it's kind of addictive.

Sokyo is a chain puzzle where you tap primes to clear the board. Play a few rounds and you'll get friendly with numbers without even trying. "What divides this?" "2×3 makes 6" — you pick up multiplication and division without it ever feeling like homework. Even if numbers aren't your thing, you'll just be playing a game.

■ Easy to learn Tap a red tile (a prime) and every number it divides in its row and column splits at once. If a split makes a new prime, that one fires too — a chain! The deeper you chain, the more clears at once and the bigger your score.

New numbers keep coming every turn. Think a step ahead and see how long you can last before the board fills up. A perfect little brain workout for a spare minute.

■ Great for

• A quick mental break
• Anyone who loves numbers or puzzles
• Getting comfortable with numbers through play (kids too)

■ Features

• Simple rules, surprising depth
• Gets tougher as you go
• Light & Dark
• No ads, no in-app purchases, no data collected
• Don't know primes? You'll pick them up as you play

Tap, chain, and clear them all.