Easy Sudoku is a nice game that offers multiple variants of this popular game. The game offers six modes, namely, Classic Sudoku, Color Sudoku, Hyper Sudoku, Kakuro, Simple Cubedoku, and X-factor. However, only three of them are available in the trial version. In case you don't know, the objective of a Sudoku game is to fill the grid with numbers from 1-9, but these cannot be repeated in any column, row, and 3x3 sub-region.
All the variants are timed and you will know the number of moves you have made and how many squares are empty. They all offer hints (which suggest one easy square to complete), cheat option (puts a number on the grid) and undo option (deletes your last move). If you are a beginner, you can also select the mark option, which will cross out a wrong number, and the lights option, which highlights the row and column when you click on a specific square. When you finish the puzzle, you can check it to see if it is correct. The game offers five difficulty levels, and multiple backgrounds and symbols to choose from. The graphics are good, sounds are fine, and the music is very pleasant.
In short, if you are looking for a Sudoku game with many variants and lots of options, Easy Sudoku may be a nice choice.