This study examines the reinvention of Portugal’s traditional arraial festival in the postcolonial city of Macau. It assesses the transposition of the arraial’s cultural significance from a Portuguese summertime event to an innovative tourist attraction that integrates Portuguese colonial symbols with interactive augmented reality experiences in three historic Macau neighborhoods. The research draws on stakeholder interviews, ethnographic observations, and analysis of game content to scrutinize how this tourist festival forges Macau’s hybrid post-colonial identity through visitor virtual engagement with Portuguese heritage. While the arraial is unique among Macau’s tourist festivals for its emphasis on Portuguese culture, it sometimes sanitizes colonial events or perpetuates historical social divides under the premise of harmonious cultural fusion. The research offers insights into the dynamics of tourism in postcolonial regions, the impact of cultural festivals as tourist attractions, and the educational potential of gamification in conveying heritage.