Modular, executable, decision-centric templates have been used as a means to model design processes computationally. The use of decision templates has been limited so far to decision making by a single stakeholder. Templates for multiple stakeholders, making concurrent decisions regarding the design of a product have not been developed. In this paper, we extend the current template-based approach using Game-Based Design, which is a method incorporating game theoretic protocols in engineering design and has been proposed as a means to solve design decision problems for multiple stakeholders. The interactions between multiple decision makers are modeled using cooperative, non-cooperative, and leader follower protocols. The proposed approach facilitates collaboration between two stakeholders by organizing design process information using decision-centric templates. The proposed approach facilitates computational modeling of designer interactions in a distributed environment by capturing the dynamics of collaborative decision making. It is demonstrated with respect to facilitating the design and prototype manufacture of a separation channel for a microscale gas chromatography system. I. Frame of Reference A. Collaborative Design in a Distributed Environment The focus in this paper is on facilitating the design of systems, complex enough to warrant resolution by multiple interacting domain experts. Although design problems can often be addressed adequately by a single designer there are many instances when the expertise of more than a single decision-maker is required, due to limited domain knowledge, assignment of responsibility, value chain configuration, etc. This necessitates effective collaboration in spite of distribution and tradeoff among conflicting objectives. In order to address the needs of collaborative design a consistent means of modeling a) stakeholder activities and b) their interactions is required. Decision templates proposed by Panchal and co-authors 4 comprise such a means and allow for the consistent (i.e., standardized) formulation of a designer's decision. A primary benefit in this regard is that the information required for making decisions and the result of these decisions can be captured in a modular, reusable, computationally executable manner. This, however, does not address the collaborative design scenario in a distributed environment. The requirements for a template-based approach addressing collaborative design include facilitatinga) Modeling of multidisciplinary , multi-objective design involving multiple decisions in a consistent, domain independent manner b) Modeling of different types of interactions between decision makers such as sequential, decentralized, and centralized decision-making c) Composability and reconfigurability of the design process d) Simulation-based design in a distributed environment e) Information capture in a reusable, adaptable, and extensible form Complex design processes generally involve designers from multiple domains making decisions about the products ...