Sudoku: Classic and Variations is an iPhone game developed by Conceptis Ltd. This app allows players to enjoy six different Sudoku variations in one place. Starting with classic Sudoku grids, players can progress to Diagonal Sudoku, Irregular Sudoku, and OddEven Sudoku, each offering a unique twist and brain-challenging logic.

For those seeking a more intense challenge, the game also offers Mega Sudoku puzzles, also known as Monster Sudoku, exclusively for iPad users.

Conceptis Sudoku stands out with its diverse variations and straightforward game design. The app provides graphic previews in the puzzle list, allowing players to track their progress as they solve puzzles. A Gallery view option provides larger previews for a more immersive experience.

With no ads and a Weekly Bonus section that provides an extra free puzzle each week, Conceptis Sudoku ensures hours of intellectual challenge and fun. It sharpens logic and improves cognitive skills, making it a must-have for Sudoku enthusiasts.