First of all, This data pack has nothing to do with the nightcore music genre I'm sorry.

Minecraft nightcore will make it nighttime and it will stay that way forever. Outside of this, all the mobs have been altered to be stronger, faster, or invisible. The idea behind this data pack is to make the game harder than normal without altering too much from the base game, this is so that anyone can play it with basic Minecraft knowledge and because I'm new to creating data packs.

If you want to learn more about this mode before you download it be sure to watch our youtube video.

Please let me know if everything works.

GuessWeTried Channel link:
https://www.youtube.com/channel/UCraiHQSd5MHSPlSYm00vFGQ