Since the game is a "tribute" to the 8-bit era, most of its sounds are sampled from classic NES and SNES titles like Mega Man , Super Mario Bros. , Metroid , and Street Fighter . Where to Find the Sound Effects
Because the game was a non-commercial freeware project, Kayin used assets without formal licensing, sourcing them from community hubs like The Shy Guy Kingdom The Spriters Resource Death Sounds: i wanna be the guy sound effects