Digital games in museums face the challenge of translating complex scientific concepts into engaging experiences that facilitate both individual learning and peer discussion. This practice insight examines Symbiosville, a touchscreen learning game designed using an event $\rightarrow$ choice $\rightarrow$ consequence pedagogical model to increase visitor understanding of the human microbiome's role in health. Through visitor observations and survey data, this case study demonstrates how evidence-based game mechanics can effectively communicate microbiome science, with players successfully understanding relationships between personal choices and microbiome health. However, the study revealed limitations in encouraging peer-to-peer learning in museum environments, where individual screen-based interactions can inhibit social engagement despite networked game features. The analysis identifies key design considerations for science communication practitioners developing digital learning games for informal settings, including the tension between personalised experiences and collaborative learning.