Sum Fun

Contains ads
Content rating
Everyone
10K+
Downloads
Content rating
Everyone
Learn more
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About this game

Train your brain, boost your math skills, and have fun along the way!

If you enjoy Sudoku, Kakuro, or other number-based puzzles, you’ll love the unique twist of Sum Fun.

Sum Fun combines logic, numbers, and strategy into endlessly replayable puzzles that have been delighting players of all ages for the last decade!

Whether you want a relaxing break or a mental workout, Sum Fun has you covered with a variety of creative board shapes, including:

Hexagon • Square • Pyramid • Star • Heart • Turtle • Snowflake … and many more!

How To Play: (aka the 3 simple rules for Having Sum Fun):

1. Place a number into any empty slot
2. If it matches the last digit of the sum of its neighbors, they get blasted away!
3. No matches? Place a number that sets up a future sum, and keep blasting until the board is empty!

Why you’ll love Sum Fun:

• Easy to play, fun to master – simple rules, with a variety of depth and strategy

• Brain-boosting gameplay – by the time you’ve played a few times, you’ll be adding up numbers faster than you can say, ‘What’s six plus eight?’

• No time limits – play at your own pace and relax while keeping your mind sharp

• Challenge friends (and yourself!) – share puzzles and see who can win in fewer moves! No internet needed: share games via QR code, text code, or simply pass-and-play.

• No annoying pop-up ads – just banner ads and optional rewarded ads for extra content. No ads unexpectedly popping up and breaking your concentration while you figure out how to close them! Best to spend that mental energy playing a game you love!

Exercise your mind, master the numbers, and discover why Sum Fun has been loved world-wide for over 10 years!
Updated on
Apr 17, 2026
Events & offers

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
App activity, App info and performance, and Device or other IDs
This app may collect these data types
App activity, App info and performance, and Device or other IDs
Data is encrypted in transit
Data can’t be deleted

What’s new

We've added new Springtime shapes to enjoy, including Tulip, Easter Egg, Butterfly, and more!

Our new Spring Festival Postcard Challenge is underway! Uncover and collect unique Spring Festival artwork (by a real artist!) as you play this limited-time event.

Plus:
• A new midnight theme, perfect for sum night-time fun!
• View all of your completed postcards in Achievements on the Home Screen
• Replay any of your 3 most recent games – beat your own score or challenge friends!
Content rating
Everyone
Learn more

App support

About the developer
WONDROUS MINDS COMPANY LIMITED
contact@wondrous.games
60 Nguyen Van Thu Street, Da Kao Ward, Floor 7, Ho Chi Minh Vietnam
+84 899 533 962

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