This paper presents the serious game “Citizenship Heroes”, whose objective was to simulate real-life dilemmas in the school environment and record students’ choices to support pedagogical practices focused on ethics and coexistence. The methodology involved creating ten situations based on teaching experiences, implementing the game in the Unity engine with integration to a C# API, and automatically collecting the data stored in Firebase. The pilot test was conducted with elementary school classes from three municipal schools. The results showed that students understood the dilemmas without difficulty, interacted with engagement, and predominantly made choices appropriate to the expected behaviors. It is concluded that the game demonstrated potential to support formative interventions, although possibilities for narrative expansion, broadening of situations, and accessibility improvements represent avenues for future versions.