Clean Numbers app for iPhone and iPad

Hi, guys! This is a number puzzle game, interesting and challenging.

The game rule is very sample:
1) The green arrow shows you the position you currently are. Clicking the four direction buttons below the number board to move current position.
2) When moving, if the number, you currently in, is the minimum number among the number board, then it will be kill. Otherwise it will be minus by 1.
3) If any number is isolated, game over. Otherwise you clean all numbers except the number you currently in, you pass the game.

This version mainly contains sections: Challenge Mode and Endless Mode
* Challenge Mode contains 7 chapters, totally 180 levels
1.Guide(3 levels)
2.Slice(27 levels)
3.Rollback(30 levels)
4.Walk Around(30 levels)
5.Trap(30 levels)
6.Minimum(30 levels)
7.Binary(30 levels)

In challenge mode, try to pass the current level so as to unlock the next level. Go for it and try your best to make it "best solution", which use minimum steps to pass the level.

* Endless Mode includes 3 difficulties: Primary, Medium and Senior.
In endless mode, level was generated by random. Try your best to make it "Pass in one time without Undo", so as to gain some points, so as to exchange Diary Pen, which can use to record level in endless mode.

Ok, thats all about clean numbers. I hope you can enjoy it. Cheers!.