Description of the Interactive Tool
This paper presents a card game developed for supporting local administrations in the design of urban green areas (UGAs) while considering the complexity of the whole system. The proposed participatory method merges the availability, accessibility, attractiveness, usability, and suitability criteria in a multi-level approach (city, neighborhood, green area) to select the optimal design solution for every UGA. The card game can be played whenever the local Administration has a UGA to realize or requalify.
The method consists of an information-gathering phase about the
study area, and three different active-participation steps: building the cards' deck, the card game, and selecting the winning hand.
To guarantee the inclusivity of the citizens, the card game could be played online or face-to-face, and every phase of the process remains active online for at least 30 days and has a dedicated face-to-face workshop.
(Traditional playing cards in Italy are identified with the name of the city where the cards are produced; e.g., cards produced in Naples are known as "Napoletane", and the cards produced in Piacenza are known as "Piacentine". Similarly, we call our cards the "Perugine" because were produced in Perugia, Italy).

Points of Strength
This card game helps develop a complex system approach for enhancing urban green areas.
First, the participatory method adopts a multi-level approach, understanding relevant multi-spatial scales to observe urban greenery from multiple viewpoints (city, neighborhood, green area).
Second, the method uses network analysis to evaluate the synergies, conflicts, and complementary factors between the internal and external variables of the urban green system. Then, the method uses these evaluations to transparently select the participants' proposals and organize cards dedicated to the case study, usable during the second phase of active participation.
Finally, this card game helps in finding site-specific and community-led solutions. Beginning with the demand for services by the participants, the method offers a transparent and straightforward process to collect and choose solutions variable for every green space in a holistic strategy that can also identify aggregate effects and emerging characteristics at the city level.