This is Garfelf's Guide 2 but Mac and Linux users can now play it. There is a Windows version as well.
Garfelf's Guide and the Cross-Platforming Within (+ Momo "DLC")

Source and More information: Garfelf’s Guide and the Cross-Platforming Within (+ Momo "DLC") [Free] [Survival] [Windows] [macOS] [Linux]

Author: itch.io