The article describes the development of an educational game at the University of Salford to facilitate learning and discussion about on a Heritage Site in Manchester: Ordsall Hall. The building has been used as a basis for a series of games about gastronomy, religion, fashion and politics of the respective times with the aim of delivering information in a playful manner. The project investigates of how a popular games engine (UT2004) can be used to create Digital Heritage representations and how features that are popular and well known amongst dedicated gamers can be ported or modified to suit an interactive environment that corresponds to scientific standards. Three games have been developed that differ in regard to "ludicity", seriousness, depth of content implemented, and ease of use. This led to terminological considerations in regard to the notion of "Serious Games" and to a critical analysis of the terminologies used and strategic branding of games as "historic", "big fun", puzzle, "serious", "First Person Shooter" or "Creative".