ChainSum

ChainSum is a number puzzle game where you connect adjacent cells on a grid to reach a target sum. Simple to learn, satisfying to master.

HOW TO PLAY
• Drag across connected cells to build a chain of numbers
• Reach the exact target sum to complete the puzzle
• Every move counts — fewer moves means a higher score

GAME MODES
• Classic — choose your difficulty and play unlimited puzzles
• Daily Challenge — one fresh puzzle every day for all players
• Stages — progress through hand-crafted levels at your own pace

FEATURES
• 4 difficulty levels: Easy, Medium, Hard and Expert
• Global leaderboard — compete with players worldwide
• Streak system — keep your daily streak alive to earn XP and level up
• Streak Freeze — protect your streak when life gets in the way
• Hints — Stuck? Use a hint to reveal the next step
• Guest mode — play instantly without creating an account
• Daily reminder notifications so you never miss a puzzle

COMPETE & PROGRESS
• Earn XP for every puzzle you complete
• Level up and climb the ranks
• Protect your streak with Streak Freeze tokens
• Compare your daily score against the global leaderboard

ChainSum is free to play. Optional purchases include removing ads and Streak Freeze tokens.