Now you can download the modpack from CurseForge - https://www.curseforge.com/minecraft/modpacks/niceworlds
- Download CurseForge (from link - https://download.curseforge.com)
- If you finish download CurseForge and click "Create Custom Profile"
- Now click "Import"
- The next step choose NiceWorlds.zip
- Wait for it to download all mods and you can play :)