If you liked "One Eyed Kutkh" and you'd like to support developers you can do that by buying DLC. Here's a list of what you'll get for purchasing it:

• Two digital art books showcasing concept art (44 pages), in-game art (32 pages) and scans from design notebook (80 pages).
  
• Original music soundtrack consists of 6 original and one bonus track, a total of 15 minutes.
  
• Desktop backgrounds.
  

All files would be downloaded to the game's folder on your hard drive.