Steam

Steam games database

Steam free to keep listing
https://steamdb.info/sales/?min_discount=95&min_rating=0
Steam free to try and keep listing
https://steamdb.info/upcoming/free/

deej hardware volume controller for games and other apps

https://github.com/omriharel/deej

potentiometers for build
https://www.digikey.com/en/products/detail/tt-electronics-bi/P160KN-0QD15B10K/2408885