Sounds in the game are attributed under the Creative Commons license for use commercially, and are royalty free. Other sounds used have no attribution license. They can be found here:

Drip Echo by SpiceProgram (https://freesound.org/people/SpiceProgram/sounds/399191/)

Messenger by Daphne_in_Wonderland (https://freesound.org/people/Daphne_in_Wonderland/sounds/400697/)

10 Second Countdown by thomasevd (https://freesound.org/people/thomasevd/sounds/202193/)

Failure Drum Sound Effect 1 by FunWithSound (https://freesound.org/people/FunWithSound/sounds/456962/)

Summer Coffee by Barradeen | https://soundcloud.com/barradeen Music promoted by https://www.free-stock-music.com

Creative Commons Attribution-ShareAlike 3.0 Unported https://creativecommons.org/licenses/by-sa/3.0/deed.en_US
https://www.pacdv.com/sounds/index.html (the website rejects the use of direct linking to sounds gotten off it) https://www.soundjay.com/tos.html (the website rejects the use of direct linking to sounds gotten off it) http://soundbible.com/royalty-free-sounds-1.html

Drip Echo https://freesound.org

Messenger Notification Sound Imitation.wav https://freesound.org


https://freesound.org/people/SpiceProgram/sounds/399191/https://freesound.org/people/Daphne_in_Wonderland/sounds/400697/https://freesound.org/people/thomasevd/sounds/202193/https://freesound.org/people/FunWithSound/sounds/456962/https://soundcloud.com/barradeenhttps://www.free-stock-music.comhttps://creativecommons.org/licenses/by-sa/3.0/deed.en_UShttps://www.pacdv.com/sounds/index.htmlhttps://www.soundjay.com/tos.htmlhttp://soundbible.com/royalty-free-sounds-1.html