heya.
just a quickie: the map included in the extras...
Just thought it was like Ultima maps, useful, nothing spoilifious about it, comes with the original physical game package... But then I took a quick look on the map that was in the Arcanum extras...
It's going to ruin the fun of exploring and I think it's a sort of cluebook material am I right?

I believe the extra's map from GOG does have all the locations shown on it. So yeah, it does have spoilers. I believe that the game originally came with a card that had a map (without towns/locations shown) on one side and the reference sheet (which is another of the extras on GOG) on the other side.

Here is a picture (from in game) that has a blank map that you can just look at if you'd like to just see the world.

http://i.imgur.com/jwzAA.png

thanks!
for both the answer and the map!

Technically, it has all the major locations; try http://www.gamebanshee.com/arcanum/theworld.php for a thoroughly comprehensive map. But yes, it does reveal a lot that you're not supposed to know right away.

Admittedly, while I like the fact that the game uses geographical ignorance to encourage you to follow the expected plot progression while letting you explore freely if you wish (and exploit whatever knowledge you please in a subsequent playthrough), it always seemed odd to me that a character who had caught an airship from Caladon wouldn't have a clue where it was, and would be carrying a map whose creator thought bridges were more important than cities.