When you go to a short link:
http://gtx0.com/the_arena
1. If you're not logged in, you'll get the option to login/register and then it'll return you here.
2. If you haven't signed up for the game you'll get the ability to sign up.
2b. If game signups are automatic (which is the default for the upcoming new game formats), you'll automatically be assigned a character and put in the game, either in a random "Birth" room or a random room in general if birth rooms don't exist.
3. If signups are manual, you'll instead see this screen. You'll get to change your signup status and see the status of other players, whether they're active or waiting.
Once you've been accepted, you'll be able to play the game.
All of this happens from that one short link.
Hosting Changes
This screen has been moved up. Here you can adjust what the signup description is and the signup system.
All signup descriptions have been imported from signup posts if they exist already.
When you approve a waiting player or add a new player, they'll get an alert and a link to the game interface.