Emilia Lazer-Walker, a Toronto-based artist and engineer, details the collaborative and inclusive development journey of "A Little Game Called Mario," an open-source project on GitHub using the Godot engine. The project encourages contributions from a diverse pool of participants, including non-coders, by automatically building and releasing new game versions on itch.io whenever a pull request is merged. To manage contributions and mitigate merge conflicts, the team leverages GitHub Actions to automate workflows, such as building and publishing the game and generating real-time contributor credits. The project also prioritizes inclusivity by using the GitHub contributors API for crediting, allowing contributors to update their displayed names easily. They have implemented preview builds and a GDScript auto-linter to maintain code quality and consistency. The community-driven nature of the project has led to the creation of additional systems, such as JSON schema validation and collision layer checks, showcasing the empowerment and ownership felt by contributors in enhancing the game's development process.