I've printed my game and used Franklin Gothic Medium. A common irk (not quite a complaint) among a lot of playtesters was the legibility of the cards.
What would be a simple, free font to use? I wanted to use MPlantin like the older magic cards or Optimus Princeps (which I believe is a rip-off of Trajan Pro, used by Dominion). Both of those seem sketchy. I've been up and down font squirrel with not much luck. I didn't realize how difficult it was to choose a font.