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Sum Fun

Greg Sharpe

No ratings yetGamesAges 4+

Get it free on the App StoreOpens Apple's App Store

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About this app

Sum Fun – The Number Puzzle Game for Sharp Minds Place numbers, match sums, blast the board! Sum Fun is the unique number puzzle that's been loved by players worldwide since 2015. How To Play (3 simple rules): 1. Place a number into any empty slot 2. If it matches the last digit of the sum of its neighbours, 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 – just 3 simple rules, with surprising depth and strategy • 20+ creative board shapes – play on a Hexagon, Pyramid, Star, Heart, Turtle, Rocket, Butterfly, Snowflake, and many more, with new shapes added regularly! • Regular Postcard Challenges – play limited-time events and collect unique downloadable artwork (by real artists!) • No time limits – play at your own pace and relax while keeping your mind sharp • Challenge friends (and yourself!) – share puzzles via QR code, text code, or pass-and-play. No internet needed! • No annoying pop-up ads – your concentration stays on the puzzle, where it belongs! We play Sum Fun too, and keep the experience friendly. • Brain-boosting gameplay – after a few games, you'll be adding up numbers faster than you can say, 'What's six plus eight?' • Multiple themes – choose from Light, Dark, and Midnight to suit your style If you enjoy Sudoku, Kakuro, or other number-based brain games, you'll love the unique twist of Sum Fun. Exercise your mind, master the numbers, and discover why players keep coming back – download free today!

What's new

Version 2.16 · Nov 11, 2026

Christmas is around the corner, and we're adding limited-time shapes including Christmas Tree, Gift and Reindeer! Keep collecting unique artwork inspired by our travels in our regular Postcard Challenges. There's a new event at the start and middle of each month! Plus: • We've added an extra dose of fun to your day, with our new Daily Challenges! Finish 3 puzzles within the required number of moves, and unlock a special bonus game! • The Beginner shape collection has expanded, including Pine Tree and Petit Egg • We've improved the home screen for tablets, automatically showing you game stats in landscape orientation • More appearance customisations are available, including experimental board colourings to add a splash of colour to your games

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