These are not chiptune, they are atmospheric horror sounds that sit well under a 1-bit look: 2 seamless ambience loops (haunted house, graveyard), door creaks and slams, chains, footsteps on wood and stone, a stinger, jumpscare, heartbeat, whisper, bone-knock and iron-bell UI, a growl, and a cauldron bubble. WAV 48 kHz + OGG, commercial licence included, use them in a game you sell, just don't resell the sounds themselves.

Free lite: https://breakasunder.gumroad.com/l/halloween-horror-lite

Full pack, 80 sounds, $9: https://breakasunder.gumroad.com/l/halloween-horror-sfx