Dungeon Fantasy needs a bare-bones setting

[ericbsmith]

Originally Posted by Peter Knutsen

What will promot an inexperienced GM to realize that he needs to think about languages before gamestart?

GURPS Basic Set II, page 505 for starters.

Originally Posted by Peter Knutsen

Wikipedia doesn't tell him to. No DF supplment tells him to.

DF isn't played in a vacuum - it pretty much requires the Basic Set (and says as much). The Basic Set has a ton of information on world design.