I've GMed one-shots of Spire: The City Must Fall, Night's Black Agents, and Lady Blackbird, and Honey Heist (Lasers and Feelings hack). Running one-shots of Trophy Dark and Night Witches soon.
Haven't decided on a system for the next campaign, maybe Spire, Night's Black Agents (or other Gumshoe system), or one of the many excellent PbtA games.
