There's an AGS multi-player client that connects through IRC (originally developed by Wyz, Dualnames and JimReed; this year's version is being done by me, Kastchey, Wyz, selmiak and Ali). You can still join through IRC as well, though you only get a small part of the experience.
Here's a recording of last year:
That reminds me: is anybody planning on recording or livestreaming it again this year?