Here's the barebones of the new game:

fetcheveryone.com/hideandseek.php

How it works
The game generates a big three mile square with you at the centre. The square is cut into a grid of 1600 smaller squares.

During any given, unlock as many squares from your grid as possible (C19 permitting) by visiting them during your training. These are the places where you can 'hide'. Before the month is up, you must choose one of these squares as your hiding place.

When the first game kicks off (1st of the month), a lone seeker must start finding people, by visiting the squares. When someone is found, they become a seeker too. The seekers can then collaborate to flush out the hiders, and a growing army of seekers hunt down the final hiders.

The last person to be found will become the seeker for the following month.

IMPORTANT
I am still building the game. Keep following this thread for updates as I make them.