this modpack is fairly simple, it adds a few different vanilla friendly mods, while changing it enough to add some fear factor to the game.
It'll add things like: torches will start with no flame, and must be lit with a flint and steal, as well as they wont stay lit forever. there are a few new dangers as well. at night you will see eyes in the dark. i wont say exactly what they do here, ill leave that for you to find out ;). there's plenty of new structures for you to find, even in the nether and end! There's lots more, i dont want to spoil to much, but ill quickly name a few.
Creepers now have new behavior.
when your in caves sounds will echo.
blocks you brake are effected by physics. (this is toggleable depending on preference)
Spider's can now walk on any surface.
there are now Weeping angles (a statue that only moves when you look away)
the only things i suggest is this:
If you want to get the best experience, use chocapic shaders with the settings listed below:
Moon illuminance: 20.0
atmospheric density: 7.5
min light amount: 0.0
saturation: 0.12
For even more immersion, try using immersive soundscape datapack.
Finally, the last thing you need to do is when you make your world, set your world type to terraforged.
(its not required but the Scary spiders resourcepack is a nice touch)