The current monument guide teaching has proven to have many challenges, as the learning effectiveness may be reduced by external interference in the real guide activities, and online approaches may cause the problem of insufficient interaction. This study integrated role-playing and multi-dimensional scaffolding theories to develop a remote scaffolding-based educational game that involved a role-playing mechanism, in which guides and learners play the roles of historical characters and participate in historical events in an authentic game environment, with the aim of improving the problems of existing monument teaching and of enhancing the motivation to visit. The results showed that this learning model has advantages in flow and motivation compared to the traditional online guide. It was demonstrated that the multi-dimensional scaffolding formed by the guides, the game environment, and the peers could keep the learners quite engaged in the game, while the dynamic scaffolding of the guides could also be effective and even keep the learners interested in the monument after the activity.