This study proposes a design perspective for a user interface to create an interactive space for players in the XR environment. A board-game-based application was designed for Hololens2, which comprised of four areas in the interactive space: 1) dice rolling, 2) playing board, 3) message board, and 4) task area. Each component supported the user's engagement and facilitated an interactive user experience in the XR environment. Since spatial perception is crucial for designing the XR environment, the four components were created like a cinematic design. The dice rolling feature allowed the user to take turns with the computer. The playing board provided a navigational map of tasks, and the board was a mixed object combining physical and digital objects. The user was able to place the virtual playing board on a physical table for an authentically immersed environment. The message board provided various information to the user, while the task area represented unique characteristics of XR. We discuss the crucial design features of the application.