Wondering what playing TerraFirmA is like? Especially if you've never played a MUD before, this simulation might give you a better idea of what to expect when you log on to the game. Of course this won't be EXACTLY like the game itself, lacking most of the real-time interaction, especially with mobiles and other people, that you'll find there, but it will hopefully serve to give you an idea.
When you see an underlined word, this means you can click on it for more, or to move in that direction. Clicking on the links in the simulation is akin to examining a mobile (The Doctor, in this example) or object in the game or moving in a certain direction.