Quoting a comment from a thread several months ago (https://news.ycombinator.com/item?id=11999393):
> Actually, he's done that in the past. He let some folks from the DF forums have part of the source code, specifically the part which uses OpenGL to draw the graphics. They were able to improve it so that it was much more efficient, and so that it could use TrueType fonts. The results were quite successful, in that the graphics now take up much less of the game's time, and TrueType fonts can make the game much more approachable.
> On the other hand, Tarn has said that he now no longer understands this part of the code. If he ever needs to modify it he'll either have to learn how it works from scratch, or farm the work out to the community again. Since he has no desire to become a project manager, he's unlikely to do the latter.