SumThing: Clever Sum Puzzle

SumThing is the addictive math puzzle that turns simple addition into a strategic challenge!

Dive into a beautifully designed 4x4 grid filled with numbers. Your goal? Select exactly three numbers where one is the sum of the other two (like 2 + 3 = 5). Clear valid triples to remove them from the board – but choose wisely! Wrong moves can lead to dead ends.

Every puzzle is carefully crafted to be fully solvable, with multiple paths to victory. Now with two distinct game modes, you can choose to train at your own pace or compete against the clock!

Features:

=> Blitz Speedrun Mode: Race against a live stopwatch! Solve the board as fast as possible, submit your best times to Game Center, and climb the global leaderboards.
=> Classic Practice Mode: A relaxed, untimed sandbox mode designed to help you practice math equations, experiment with patterns, and play without any pressure.
=> Three Difficulty Levels: Easy (single digits), Medium (two digits), and Hard (three digits) each with its own dedicated global leaderboard on Game Center.
=> Hints & Undos: Got stuck or made a mistake? Enjoy 2 free Hints and 2 free Undos per game to keep your momentum going, with optional refills by watching a quick rewarded ad. => Speedrun Penalties & Countdowns: Think fast but think smart! Using help tools in Blitz mode adds a time penalty (+3.0s for Hint, +1.5s for Undo). A 3-second preparation countdown gives you a head start before the clock begins. => Clean & Premium Design: Gorgeous gradient interface, glassmorphic visual overlays, smooth animations, and satisfying haptic feedback.

Whether you're sharpening your brain during a commute, relaxing at home, or competing for the fastest solve time in the world, SumThing delivers endless "aha!" moments.

Ready to find the perfect sum? Download now, beat the clock, and claim your place on the leaderboards!