Sudoku is an incredibly popular puzzle game made up of a nine by nine grid. The goal is to fill the grid with digits so that each column, row, and three by three subgrid contains all the digits from 1 to 9. Not only is it fun, but it’s mentally challenging and is considered a great brain exercise. Now, if you’re interested in trying a more unique and fun version of the game, you’ve got to give Speroku a try. It employs the same type of strategy of Sudoku, but it uses colors and a three dimensional sphere…almost like a combination of Sudoku and the Rubix cube…oh and it’s an app. You have these vertical and horizontal slices, and each row and column containing 9 elements that need to be filled with 1 of the 9 colors available. But unlike Sudoku, you also need to use your memory to complete each level because half the sphere is hidden from you at all times. The creator of Spheroku also included the original Sudoku in the app, as well as two combinations – a sphere with numbers and a regular flat grid with colors. And with three levels – you’ve got tons of fun options to play. If you’re into games that both stimulate and entertain, you’ve got to give Speroku a try. So give SPheroku a try – you’ll enjoy challenging yourself. The app is free to start with 4 games, one for each level. And if you like it, you can purchase more packs at 100 games for under 2 dollars. Not a bad price. It’s available on iOS and Android devices. Head to spheroku.com to download it now.