Hi! I'm really glad you enjoyed our game man! I'm glad to hear that and thank you for your kind words ^-^
As for the sfx/music, the sfx are some of em are sourced from somewhere else like freesound.org and others are created by my own voice or are created via sfx generators and I all fine tune it myself via an audio editor and then it was put into the game!
As for the music, all of them comes from freesound.org! Carefully picked 😁
Again, thank you for your lovely feedback! <3