summationWe have 10 Promo Codes to give away for Summation, courtesy of  JetFable Studio. The first 10 (unique) people to comment on this post will win a code. Make sure to include a valid email address so that we can send you your code. If you have a Twitter account, follow @JetFable for updates.

Summation is a fun math-themed game, sort of a blend of Sudoku and Tetris.  If you are a fan of either of these games or Drop7, then you’ll probably really enjoy Summation. For more game details, click on the link to the App Store below, or you can read our Apps For Maths Lovers article featuring Summation on