US

From XKCD Wiki

[edit] join #us 13: How to Read Play

From the info page
Join #us is a game somewhat like notpron or replats-eht. You find short clues in the topics of irc channels to figure out what the password to the next channel is. The first channel is #0 and the next is #1 then #2 and so on. The first questions or hints will be riddles that, although not easy, were not thought of by me and can there fore be searched for easily if you really want to.

To begin the game, join #us.

[edit] Management

The channel is run by Geekthras and his faithful bot, Lounger. Lounger has several commands. You need not address lounger specifically, merely say each command on its own line, in #us.

Command	Function
help	Basic help.
send <nick>	Find <nick>'s highest channel (case sensitive)
sendall	List the nicks and top channel of anyone who has every played