This is the Dark Sky video game by Eric Rosheger, released on September 12, 2024.
 
This is a very short and very simple adventure game set in the fantasy world of Dark Sky.
Available on Linux, Windows, and macOS.
Please note that currently, the sale of all digital goods is final. I hope to have a more flexible return policy in the future, but this is the best I can do right now.
After your purchase, you will be sent a password to access the file.