ClusterSum is a clean, clever puzzle game where every number tells you exactly how big its connected group must be.
Fill the grid so adjacent matching numbers form the right-sized clusters. A 3 must belong to exactly three connected 3s. A 5 must belong to exactly five connected 5s. Simple to learn, surprisingly deep to master.
Play your way:
- Take on a new Daily puzzle every day
- Progress through endless Journey levels
- Use hints when you need a push
- Chase perfect solves and streak rewards
- Enjoy quick sessions with satisfying logic
ClusterSum blends number play, pattern spotting, and deduction into a puzzle format that feels calm, crisp, and rewarding.