USB Sudoku Portable

This program gives you the ability to play the famous Sudoku game without needing to install it on your computer. It has three difficulty levels to challenge you: easy, medium, and hard. Your game is automatically saved each time you leave the program, so you can pick up where you left off whenever you want. You can also check your progress or view the solution to the game that you're playing. It's possible to modify the game's interface so you can change the size of the numbers to fit your liking.