Extreme Difficult Sudoku 2500 is a free puzzle game developed by Ohte Inc. for Android devices. This game is perfect for those who are looking for a challenge beyond regular Sudoku puzzles. It offers a collection of 2500 puzzles divided into five categories: Normal, Cross, Jigsaw, Cross Jigsaw, and Inequality. Each category has 500 puzzles that will put your problem-solving skills to the test.

The game is easy to navigate and has a simple user interface. The puzzles are presented in a clear and concise manner, making it easy to understand the rules and start playing right away. The game also has a feature that allows you to track your progress and save your completed puzzles.

Overall, Extreme Difficult Sudoku 2500 is an excellent puzzle game for those who love a challenge. It's free to play, and with 2500 puzzles to solve, it will keep you entertained for hours. So, if you're up for a challenge, download Extreme Difficult Sudoku 2500 and put your problem-solving skills to the test!