So uh, you released the source? What's the rules for using it? Can we use the assets from the source? I was working on a doom rpg thing awhile back and stopped because I wanted to get away from Doom. This would be a good compromise.
Good question! That depends on your intended use.
GDScript (.gd) files - These are MIT licensed, so you can use them for both commercial and noncommercial projects.
Art and music assets - These are proprietary and not covered by the MIT license. You can use them for noncommercial projects only, not commercial ones.
Note: I’m not the author of some game assets, so please check their original licenses before using them.