Sarien.net is a browser-based version of the Sarien Sierra adventure game emulator.  The incredibly awesome thing about going to sarien.net instead of using the desktop version is that sarien.net supports multiplayer.  You can wander around Space Quest with a hundred other Roger Wilcos, chatting with each other and helping one another solve game’s puzzles.

Sarien supports a handful of the Sierra classics, including King’s Quest, Space Quest I and II, and Police Quest.  The games are also somewhat playable on the iPhone and Wii browsers, though the control is a bit wonky.

(via Ben Ross)