In the post-pandemic era, distance education and training modes without space constraints are gradually becoming a new trend in training. Game-based training combined with situational simulations is a potential approach. This study used a simulation company scenario and a decision-making analysis task of promotion assessment as the game context, and proposed an innovative game mechanism integrating the simulation situation scenario and the interactive contextual clue scaffolding as a guide to enhance learning effectiveness. This study used the "Gather Town" platform to design a simulation office scenario, and "Google Forms" to design interactive contextual clue scaffolding. This study conducted empirical research to evaluate this mechanism, with a total of 60 participants divided into an experimental group that conducted game activities and a control group that was only provided with document files as scaffolding for comparative analysis. The results of the study revealed that the proposed exploration guidance mechanism of integrating immersive scenes and interactive contextual clue scaffolding could allow learners to experience a high level of game fidelity and increase the discovery rate and usefulness of the scaffolding. It also reduced learning anxiety, maintained learning motivation and high flow, and resulted in significantly higher learning effectiveness than the control group approach.