Number Array comes from an zhuona.

His description: The goal of number array is to arrange the numbers into four rows ordered from top to bottom, 1 through maximum, each row having a different color.
At the beginning of game, you have 4 blank spaces to place the numbers. A blank space can be filled by the next value of the same color as the number to its top. For example, the 4 of red can be placed in a blank space to the right of the 3 of red. No numbers can be placed to the right of a maximum. If there are multiple blanks to the right of a maximum, none can be used without moving the maximum. My thoughts: this is an interesting game that involves interesting strategy.  Multiple times I ran into trouble and had to restart.

My only complaint is that the shades of blue are a touch too similar.

3 questions:
1. How are these puzzles generated"
2. Are there multiple solution paths"
3. Is every situation possible to solve"

https://itunes.apple.com/us/app/number-array/id1281540869"mt=8
https://azhuona.tumblr.com/post/165259999821/number-array

...