Cardinal Chains is a minimalist puzzle game that that focus on forming non-decreasing sequences of numbers and filling the whole grid with colors.
Each level starts with a monochrome grid of numbers, plus a few colored cells marked with an X. Starting at these cells, you must link up numbers in non-decreasing order until the whole grid is filled with color.
As Always, Good Luck and Have Fun.
Available on tablet and smartphone: Apple iOS and Google Android.