The Crimson Diamond is an EGA text parser mystery adventure game where you play as amateur geologist and reluctant detective Nancy Maple. Nancy is born and raised in Toronto, Canada, where she works as a clerk for the Royal Canadian Museum. She dreams of attending university to study geology and mineralogy, and she's prepared to venture into the unknown to achieve her goals!

Follow Nancy as she travels north to the ghost town of Crimson, Ontario to investigate the discovery of a massive diamond in the area. Eavesdrop on conversations to learn more about the eccentric cast of characters who find themselves gathered at Crimson Lodge. Explore the lodge and its environs to evaluate the diamond claim, and maybe solve a mystery or two along the way! The Crimson Diamond is a cozy mystery that encourages reading and engaging in the story over devious arcade challenges.