Heavily inspired by TechnoBlade's video:
https://www.youtube.com/watch?v=tBfeIXLuOYg

TNT spawns every 10 seconds for each player!
Each player''s TNT spawn timer is reset on their death.

TNT doesn't spawn for players in creative or spectator mode.

TNT spawn time and other settings can be configured by using Settings.html or Settings.hta

To start TNT spawning use: /function ntntc:common/start
To stop TNT spawning use: /function ntntc:common/stop

For more information read ReadMe.txt and ConfigurationGuide.txt

Good luck!!

How to install:
A) Extract the .zip folder into your world save ./datapacks/ directory.
B) Extract the .zip folder anywhere onto your computer, then during world creation select data packs and then drag and drop the ntntc directory onto the minecraft screen.