Cardinal Chains is a minimalist puzzle game centering on the concept of non-decreasing sequences.

Each puzzle begins 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. The demo version contains the first 100 puzzles.

Full game features:

• 500 unique, carefully handcrafted puzzles of varying difficulty, each with a single solution
  
• Beautiful, lengthy chill-out soundtrack created by accomplished professional artists
  
• Minimalist, elegant design without timers, scores or other hassles - just pure gameplay
  
• Several built-in color themes, including colorblind options. Or...
  
• ...make your own color themes - right from within the game!
  
• Features achievements, cloud saves and quality of life options