How do PBM games work?
human or computer, once a week, and they mail the results back to you. A PBM game can be as simple as a human running an ordinary Dungeons & Dragons game, or a 45,000 line program moderating a fantasy strategic/role-playing game with 50 pages of rules. PBEM games — those conducted via email — are generally played by mailing human-readable files back and forth. A few games require special software on your home computer; if so, it will be mentioned in the game description, if there is one.