Here is an addon for you. It's name is horror generation addon. Many of these in minecraft have been upgraded to horror. This is a horror based addon.Try it now and enjoy minecraft with scary feeling.This is for you. Download now.
Select version for changelog:
Changelog
Dark colormap, no leaves, blood textures, Speedy mobs, clear underwater, Creeper burst, biomes etc.
What's New in V2
• Clouds
• Cave noises
• New title
• New pack icon
• etc.