In the twenty-first century, global challenges are much related to the urbanization and aging society, particularly in the developing country. This research 1). Studies policy formulation process of age-friendly city 2). Studies citizens' needs and 3). Proposes an achievable age-friendly strategic plan. Methodologically, the approaches include both quantitative and qualitative. A 420 set of questionnaires distributed to survey the respondents’ attitude and expectation. This study applied gamification activity as a new qualitative technique for encouraging the participants in discussions. Moreover, the establishment of the first municipality senior center is used to be a case study. The findings include 1). Regarding the aspect of the scope, channel, and stage, the civic engagement level is at a moderate. Moreover, been applied the WHO Global Age-Friendly Cities framework, the study reveals that civic engagement in housing policy is at the highest level. More importantly, the formulation process led by the internal and external environment as well as the policy sources. 2). In all four aspects, the need for civic engagement is at a high level. 3). The housing policy among the other types is the most interesting one. The strategic proposal plan presents the two key suggestions which are 1). Providing more accessible public space and facilitating the two-way communication channel. 2). The age-friendly city plan should cover the four policy types which are the educational, public health, environmental, and safety policy.