OCTO is a highly addictive math and logic puzzle that is so unique it's been patented! Your goal is to put numbers in the octagons without repeating a number in any octagon, row, column or diagonal. You're provided the sums of the numbers in the diagonals and the sums of the numbers around each diamond. The rules are simple but the possibilities are endless!

Puzzle Features:

- OCTO is a newly patented math and logic puzzle which combines aspects of Sudoku and Kakuro while adding some completely new elements
- Puzzles range from Easy to Hard based on how many numbers you're given to start with.
- OCTO puzzles combine different solving techniques--make sure the numbers add up and don't repeat numbers in the octagons, rows, columns, and diagonals
- Easiest OCTO puzzles are perfect for kids just learning to add
- Hardest OCTO puzzles are as challenging as any Sudoku, with a lot more twists

App Features:

- Ten starter OCTO puzzles, including Easy, Medium, and Hard
- Extensive instructions, including tips and solving techniques
- Work any number of puzzles at the same time! Your progress will be stored for each puzzle and will be available whenever you want to continue
- Replay feature allows sharing and "competitive puzzling"
- Check and Undo features
- Choose the colors of the puzzle board and connect to your iTunes for music