sfx in Music

Olá, sou desenvolvedor de jogos e preciso de ajuda com softwares gratuitos para criadores de música, alguém conhece um bom?

https://www.youtube.com/watch?v=NYtux4rG-Yk

POLARBEAR'S NIGHTS JUMPSCARE

MADE BY @DAMYS

ECHO POR @DAMYS

This is about how to implement sounds to our game.

What's your thought?

https://gamejolt.com/games/zhelter/450710/devlog/devlog-2-about-…

https://www.youtube.com/watch?v=oNneLFEsAkA

Do you like ASMR experiences? Here is a nice, relaxing video recorded from the prologue scene of my game.

https://gamejolt.com/games/through-the-fragmentation/434232

Humble Bundle is giving away loads of music and sound effects real cheap for content creators! They've got zombies, swords, guns and more. What are you waiting for?

https://www.humblebundle.com/software/sound-fx-software

what do you think I should add to my new game creepy noises like creaking and breaks or have it so that you can hear your breath and also hear the thing trying to kill you? Tell me which one I should do.