Prior to publishing her novels, Cogman actively participated in role-playing games, likely as both a player and a game master. This experience provided her with a deep understanding of storytelling, character development, and world-building.

Cogman has worked on source material and writing for various role-playing game systems. These contributions showcase her ability to create compelling narratives and engaging scenarios within established game settings.

She has contributed to games such as Call of Cthulhu, Warhammer, and Paranoia. These diverse projects demonstrate her versatility as a writer and her ability to adapt to different genres and styles.