fascinating article on the logistics of doing tabletop gaming in some of the most restrictive conditions in the world:

Playing Dungeons & Dragons is more difficult in prison than almost anywhere else. Just as in the free world, each gaming session can last for hours and is part of a larger campaign that often stretches on for months or years. But in prison, players can’t just look up the game rules online. The hard-bound manuals that detail settings, characters and spells are expensive and can be difficult to get past mailroom censors. Some states ban books about the game altogether, while others prohibit anything with a hard cover. Books with maps are generally forbidden, and dice are often considered contraband, because they can be used for gambling. Prisoners frequently replace them with game spinners crafted out of paper and typewriter parts.