Disregard the Version, though if you are think of starting a Pocket Edition (or Windows 10 edition) server or realm, this is the behavior pack for you. This will stop ALL player damage from TNT and it will make sure there is no world damage.

HOW TO INSTALL:
1) Download From Link Below. It will lead you to a google drive Page. Click the downward facing arrow on the top right.
2) You will see the ".mcworld" file
3) From here, go to minecraft.net/addons and scroll down to "installation instructions"
4) fallow their instructions for your device to download the world you now have the world!

TO CHANGE IT TO YOUR PER-EXISTING WORLD WORLD:
Since I don't own an android, gear vr, or an oculous, I cannot tell you instructions for those, but here is it for Win10 and iOs:

WINDOWS 10 EDITION:
1) Open up windows explorer (the one for files and folders)
2) Go to the bar that says "Quick Access" and click it when your mouse isn't touching the arrow or the words "quick access"
3) Type "C:\Users\USERNAME\AppData\Local\Packages\Microsoft.MinecraftUWP_8wekyb3d8bbwe\LocalState\games\com.mojang", replace USERNAME with your username, and press enter
4) double click "minecraftWorlds"
5) look through all of these folders to find your world. Yo can tell which world is which by looking at the levelname file
6) once you found your world, click the "level" file (if there are two, then the one on top) and copy it
7) Go back to the minecraftWorlds folder and click "date modified"
8) The world that is on top should be the one with the anti-tnt. go into that folder and paste the "level" file.
9) OPTIONAL: change the levelname file to whatever you want..
10) Open the world. Enjoy.

iOS (You need to do this on a computer, but it is for your phone):
1) Download iExplorer (you can find it with a quick google search) and go through the installation process
1.5) Plug in your iOS device and hit "Trust" when it asks you to trust the computer
2) Once downloaded. open it
3) Click "continue in demo mode"
4) On the side bar, click "Apps"
5) Open "Minecraft PE"
6) Open "games"
7) Open "com.mojang"
8) Open minecraftWorlds
9) fallow steps 5-9 under windows 10 edition directions (they are exactly the same)
10) Unplug your phone From Computer.
11) Open your world. Enjoy.

PS: Sorry this is in "projects" Section, but there was no other place I could put this.
PSS: Please Read the "README" file for info on if you want to add to my plugin.