Conventionally, digital presentations of heritage rely on static views, the fixed focus of pre-rendered computer animations, or relatively simple show and tell interactive experiences. The work described in this paper aims to approach the goal of "Virtual time travel" proposed by Ch'ng (2009) by using first person computer game software to generate the virtual world. In such a world users are free to explore virtual space and time, creating their own links and meanings. This paper explores the experience gained in the design of several experimental microgames: Imagining the Stones, an exploration of an idealized landscape around Stonehenge; Capture the Castle, a free-form exploration of the earthwork remains of a medieval motte and bailey castle, generated from community-led fieldwork and Now and England a game-based meditation on the landscape and text of Little Gidding, the concluding poem of T.S. Eliot's Four Quartets