The Halcyon City Herald Collection is the first supplement for Masks: A New Generation, a tabletop roleplaying game in which you play young superheroes in a city with a multigenerational history of superheroic deeds, crises, and champions. This supplement details new rules and settings for Masks: A New Generation, including:

Five new limited edition playbooks, along with advice for using them in your game: The Innocent, The Joined, The Newborn, The Reformed, and The Star.
A collection of articles detailing many of Halcyon's greatest catastrophes and characters, such as Inferna, Monarch Industries, and the Mole People.
A slew of new moves fleshing out those people and places with mechanical weight.

Masks: A New Generation make use of the same rules-light engine as Apocalypse World, Monsterhearts, Urban Shadows, and Epyllion to create stories about young superheroes in the vein of Young Justice, Young Avengers, and Teen Titans. The Halcyon City Herald Collection fleshes out the setting of Halcyon City with new places, new faces, and new mysteries.