Number Join - Connect Diagonal is a logic puzzle game available on iPhone. The game consists of filling in missing numbers in sequential order, horizontally, vertically, or diagonally. With simple rules and addictive gameplay, this game will keep you entertained for hours.

Featuring 5 difficulty levels and over 500 levels, Number Join - Connect Diagonal offers a wide range of challenges for players of all skill levels. Whether you're a beginner or an experienced puzzle solver, there's something for everyone in this game.

One of the standout features of Number Join - Connect Diagonal is the "Check" function, which allows you to highlight any wrong numbers you may have entered. This feature is especially helpful for those tricky levels where it's easy to make mistakes. Additionally, there is an option to enable automatic highlighting of wrong numbers, making the gameplay even more seamless.

Another convenient feature is the auto-save function, which saves your progress in unfinished levels. This means you can pick up where you left off, even if you need to take a break from the game.

For those who like to challenge themselves and compete with others, Number Join - Connect Diagonal offers Game Center Achievements. Test your skills and try to complete as many levels as possible, earning achievements along the way.

Overall, Number Join - Connect Diagonal is a fun and addictive logic puzzle game that offers a wide variety of challenging levels. Whether you're a casual gamer or a puzzle enthusiast, this game is sure to keep you entertained and engaged.