The music files "Arcade Fantasy.ogg", "Classy 8-Bit.ogg", "Mysterious Magic.ogg", and "Whimsical Popsicle.ogg" have been licensed for non-attribution use in Rusty Engine itself by a commercial license agreement between the author of Rusty Engine and the creator of the music, Eric Matyas. However, any distribution of these music files in any project created using Rusty Engine must include attribution information as per the directions at https://soundimage.org/attribution-info/ or be independently licensed.