Harlequin Games is a business which designs and moderates PBM games by email of which their Legends (PBM) engine is the most recognized. From their "About Us" page - "We fuse wild imagination with good game-play in everything we produce and do so with professionalism and love for the hobby. Established in 1994, Harlequin has quickly grown into one of the largest postal/email gaming firms in the world, and we look forward to maintaining a long and happy relationship with our players." Harlequin Games was winner of the Gamers' Choice Origins Award in 2004 for the play by email game Legends (PBM).

List of games