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By The Game Creators

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This elegant and fun maths game is now available for the iPhone and iPod Touch.

Enjoyed by over 7.5 million PC users worldwide, Dropsum will stretch your mental agility and give your brain a good work out.

In DropSum you drop numbered balls into a grid. The aim is to make a line of these balls add up to 9, either horizontally or vertically. When you make nine you score some points and all the balls involved change color. They start out grey and advance to blue, yellow and then red. Once a red ball has been used to make a sum of nine it will explode and allow any balls above it to fill the gap. The falling numbers then have the potential to form scoring combinations with their new neighbors, which may burst other balls, and so on. Setting up large combos like this is the way to score serious points. The game ends when the whole grid is filled.

Destroy special octagon tiles and you'll release a special star. These stars are gathered up after a short while. The more stars gathered, the higher the bonus you'll receive.

DropSum becomes very addictive and will improve your basic maths skills the more you play it.

It's great for both kids and adults and will help speed up your mental maths agility.

* Listen to the relaxing in game music or your own iTunes music
* Your progress is always saved if you quit at any point
* Ten trophies to achieve
* Classic and techno display themes with their own music styles

The PC version received these review scores;

"The real attraction here is the pure awesomeness of numbers; all the different ways you can assemble a nine from lesser parts; the near-infinite possibilities for crumbling a tower of integers into itself. It's like an arithmetic playground."
Casual Gameplay

This is what said about DropSum; "DropSum provides an enjoyable number crunching experience."
"And what's really nice about DropSum is that as you get into its flow you don't have to think too specifically about adding up, only about the patterns required to make sums of 9 more likely in the future. A surprisingly engrossing number-based game, DropSum lets the player find their own pace as they add up to 9." Bronze Award.

"DropSum, a clever puzzler that combines elements of Tetris and sudoku."
Guardian Games Blog.

"Graphically, the game oozes polish...We couldn’t be happier with the enjoyable gameplay and slick look of The Game Creators’ offering."
5 out of 5

What's New in Version 1.4

Corrected a problem with Facebook connectivity.

iPhone Screenshot

iPhone Screenshot 1
iPhone Screenshot 2
iPhone Screenshot 3
iPhone Screenshot 4

Customer Reviews

I should really take off one star because no updates since 1999…

…but I won't because I don't want anyone not to try this amazing game! Really surprised at how fun it is, how much strategy evolves over time! Trouble putting it down!

Unfortunately not updated for the graphics of modern phones. Lots could be done with this game if they pick up development again!

View In iTunes
  • Free
  • Category: Games
  • Updated:
  • Version: 1.4
  • Size: 6.5 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 2.2.1 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

Current Version:
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