by dulsi » 05 Dec 2020, 23:56
Not sure. Sounds are from freesounds.org which says all sounds are CC licensed but I don't know which CC license that is. One font appears to be public domain. Another is Open Font License. I have no idea about the third since he links to a twitter account for credit. The music links to bandcamp but I don't know how it is licensed to the game.
EDIT: Added info in my README.md. The last font was found to be "free to use but attribution appreciated". Bandcamp page lists the music as CC-BY-3.0. Sound effects are all renamed and probably converted to ogg. I don't know that it is feasible to find the origin of each file. Freesounds allows CC0, CC-BY-3.0, and CC-BY-NC-3.0. Given that the game was commercially released they are probably all CC0 and CC-BY-3.0. So I think it is libre software but not easy.
If you wanted to reuse a sound effect, you would need to copy all the attribution and say it was ones of these guys. (Tabletop gaming has the same problem. The credits at the end doesn't list what is taken from where so the only way to be sure is to copy the entire credits list.)