"Choosing Healthplans All Together" (CHAT) is the name given to a simulation exercise in which players decide which benefit types (e.g. hospitalization, consultations, tests, imaging, medicines, etc.) they would like to include in their health insurance package, and what level of service (basic or high) they prioritize. This activity emphasizes the critical need to design health insurance benefit packages based on local information. The core goal of this exercise is to ascertain which benefit package best reflects the priorities of the group of players within a finite budget allocated for health insurance and within the circumstances in which the participants live. The CHAT simulation exercise consists of a game-like activity in which the participants (usually in groups of 12 to 15 people) can choose between different benefit types, and for each type, the coverage level that are realistically priced, based on actuarial estimates reflecting the unit cost and utilization data that apply locally, and that were used to calculate the costs before the simulation exercise unfolds. In this way, the simulation exercise can focus on a simplified decision making process that enables participants to visualize the trade-offs they make, while the complicated actuarial calculations involving statistical information are separated. The CHAT exercise is usually run in several rounds to facilitate the learning process. In the first round, participants individually choose benefit packages that meet their and their families’ needs; the first round serves mainly to teach participants the rules of the game. In subsequent rounds, participants can validate their choices by checking how well they would be covered under different scenarios. The scenarios are described in “health event cards” that each player pulls out from a deck of cards in turn, and reads out aloud; this way, the entire group can validate choices made in the previous round. As the CHAT tool is intended to design a health insurance benefit package for a specific target group, the entire group of participants has to reach consensus on one benefit package for the entire group or community in one of the rounds. The entire process is led by a facilitator who follows a script, which ensures that explanations and process are as standard and comparable as possible in different groups or locations. The process can therefore be seen as a version of a Focus group Discussion. In 2005 the CHAT tool was thoroughly revised to be tested in the context of a