Next to the regular Sudoku and the Samurai Sudoku, which has 5 Sudoku joined in a quincunx arrangement, there are much more Sudoku variants available on the web.
Although Sudoku’s are never boring, sometimes it is nice to solve different Sudoku variants.
The first website I found showing you Sudoku variants is called Age of Puzzles which shows you five variants of Sudoku.
Math Games shows you a dozen of Sudoku variants. Just find the Sudoku variant you like and start creating the Sudoku variants puzzles you love most. Happy Puzzling!