Extension will display stars for the number of years a user has been registered on a forum.
This extension is the 3.1.x version of the 3.0.x Annual Stars Mod](https://www.phpbb.com/customise/db/mod/annual_stars_2/)
Clone (or download and move) the repository into the folder ext/phpbbmodders/annualstars:
cd phpBB3 git clone https://github.com/phpbbmodders/phpbb-3.1-annualstars.git ext/phpbbmodders/annualstars/
Go to admin panel -> tab customise -> Manage extensions -> enable Annual Stars