The Morality Game: An online multiplayer platform to standardize, expedite, and expand research on cooperation

Gregory N. Stanley; Alan Yang; Liam Tsimhoni; Roujia Wang; Ekdatha Arramreddy; Rohan Desai; Shulin Pan; Michael Ahn; Vijairam G. Moorthy; William Mathias; Mai Xu; James Kessler; Yahan Xing; Yang Li; Duoming Bian

arXiv · 2606.24037

The Morality Game: An online multiplayer platform to standardize, expedite, and expand research on cooperation

Gregory N. Stanley·Alan Yang·Liam Tsimhoni·Roujia Wang·Ekdatha Arramreddy·Rohan Desai·Shulin Pan·Michael Ahn·Vijairam G. Moorthy·William Mathias·Mai Xu·James Kessler·Yahan Xing·Yang Li·Duoming Bian

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Abstract

This paper presents the Morality Game, a platform designed to standardize and accelerate research on cooperation and morality through game theory-based experiments. The Morality Game functions as a video game for science, a hub for economic game research, an open-access data repository, and a tool for expediting the research process. It allows researchers to launch customized online multiplayer experiments with zero coding, using game trees to simulate moral dilemmas. The platform automates participant payments, data collection, and analysis, promoting replication and transparency. This paper details the platform's architecture, emphasizing its capabilities for standardizing research methods, unifying data, and enabling rapid aggregation and comparison of results. The Morality Game leverages dynamic, self-correcting game trees to generate well-controlled, abstract experiments that can represent any social scenario. Participants interact through a responsive user interface, making the experiments intuitive and engaging. Researchers can configure experiments through a user-friendly dashboard, specifying various parameters and utilizing pre-created or auto-generated game trees. The platform supports nested belief representation and incorporates artificial agents with customizable traits. Plans include integrating social networking features, enhancing emotional expression capabilities, and expanding the platform's reach to remote small-scale societies to test the ecological validity of findings. By evolving into an integrated ecosystem that supports the entire research lifecycle, the Morality Game aims to foster collaboration, enhance data accessibility, and ultimately increase cooperation. This paper outlines the platform's current features, architectural details, and future directions, demonstrating its potential to advance cooperation research.

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Gregory N. Stanley, Alan Yang, Liam Tsimhoni, Roujia Wang, Ekdatha Arramreddy, Rohan Desai, Shulin Pan, Michael Ahn, Vijairam G. Moorthy, William Mathias, Mai Xu, James Kessler, Yahan Xing, Yang Li, Duoming Bian. 2026-06-23. The Morality Game: An online multiplayer platform to standardize, expedite, and expand research on cooperation. https://arxiv.org/abs/2606.24037

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