Please take in mind that this only works with Minecraft in 1.12 or higher using the /function command
Make sure you do C:\Users\*You*\AppData\Roaming\.minecraft\saves\*WorldName*\data\functions
Make sure to do this in the version 1.12-pre7. I'll add screen shots soon enough.
Make sure you unzip it first or it wont work.
1.
Waste Land Survival
2.
Zombie Survival
3.
No Stone Survival
4.
Hard Survival
5.
More Caves Survival
6.
OP Survival!
More Awesome Functions Coming in the Future!
Site Version 1.8.4