Channel 3 Games: This online
museum to classic video games takes its name from "that
pre-cable, pre-satellite dead-air channel between channels" on
which you would tune your TV to play the video games of yesteryear.
MUD stands for Multi-User Dungeon. They are text-based virtual worlds, where
you can wander around, talk to people, build things, solve puzzles, go on
quests, etc. These sites are accessed by using telnet. If you web browser is
properly configured, you should be able to click on a site below and
connect direcly to it. If not, you will have to type the address in by
hand.
Chat systems are similar to MUDs, but there is less to 'do'. There
usually are puzzles to solve, merely a world to create, wander around, and
talk to people in.