This dataset includes the chat transcripts from two iterations of playing the Serious Game New Shores: A game for Democracy with a more diverse (reflecting the public) and a less diverse group (reflecting policymakers). It also includes the results for all players in the 10 rounds of the two game iterations and the final reports produced by the serious game for each iteration. It includes the qualitative coding analyses for the the two workshop chat transcripts as well as annotated chat transripts to show the coding process that was followed. Notes from running the two workshops with observations for the two groups are provided. The aim of the project is to investigate the impact of diversity on decision-making for sustainability using a serious game as a research tool.