An excellent brain-testing game. Perfect for hours of fun or for a short break from work.
USB Sudoku portable, is a USB-portable, smaller version of the addictive numbers-puzzle, created in France over 100 years ago. This particular play-on-the go version features a resizable interface, so you can adjust the number size to your preference. It also includes 5 difficulty levels as well as customisable difficulty, the option to enter possible solutions in empty boxes, automatic game saving when leaving the app and a ‘solve game’ feature showing all solutions to your particular puzzle. Hours of brain-testing fun to be had!