The field of sustainable systems is witnessing a significant shift towards cooperative decision-making and game theory. Researchers are exploring innovative approaches to address the complexities of multi-stakeholder environments, where individual interests often conflict with collective goals. The use of game-theoretic frameworks, such as Markov games and cooperative game theory, is becoming increasingly prominent in designing mechanisms for fair allocation of resources and rewards. These approaches enable the development of strategic cooperation among self-interested operators, leading to improved outcomes for users and the overall system. Noteworthy papers in this area include:

• Optimal CO2 storage management considering safety constraints in multi-stakeholder multi-site CCS projects, which proposes a paradigm based on Markov games to investigate coalition structures.
• Co-Investment with Payoff-Sharing Mechanism for Cooperative Decision-Making in Network Design Games, which explores cooperative mechanisms for simultaneous benefits to operators and users.
• A Mechanism for Mutual Fairness in Cooperative Games with Replicable Resources, which introduces a mechanism for fair allocation of rewards in collaborative learning scenarios.