Extreme Difficult Sudoku 2500 is a challenging puzzle collection for iPhone users. Developed by Ohte Inc., this game offers a unique twist on the classic Sudoku game.

With five categories to choose from - Normal, Cross, Jigsaw, Cross Jigsaw, and Inequality - players are presented with a total of 2500 puzzles to solve. Each category contains 500 puzzles, providing endless hours of brain-teasing gameplay.

The game is completely free to play, allowing users to test their puzzle-solving skills without any financial commitment. Whether you are a Sudoku enthusiast or simply looking for a challenging game to pass the time, Extreme Difficult Sudoku 2500 offers a wide range of puzzles to keep you entertained.

Challenge yourself and see if you have what it takes to solve every puzzle in this extensive collection. Download Extreme Difficult Sudoku 2500 now and put your logical thinking to the test!