The blame game among political actors has been a persistent issue in Nigeria's political landscape, with various parties and their supporters’ pointing fingers at each other for the country's underdevelopment. This study aimed to investigate the relationship between the blame game among political parties and underdevelopment in Nigeria. The study analysed data from various sources, including news articles, political speeches, and social media posts, to identify the blame game patterns among political parties in Nigeria. The data was analysed using content analysis to uncover the themes and patterns of blame game rhetoric used by political parties. The findings revealed that political parties in Nigeria engage in a blame game that often leads to a lack of accountability and poor governance. The parties tend to blame one another for the country's challenges, rather than taking responsibility and working together to find solutions. This blame game culture has contributed to the country's underdevelopment, as it diverts attention from critical issues and impedes progress. The study also identified several themes of blame game rhetoric used by political parties in Nigeria, including blaming previous governments, blaming opposition parties, and blaming external forces. These themes often serve as a smokescreen to divert attention from the party's failure to deliver on their promises. In conclusion, the blame game among political parties in Nigeria has contributed significantly to the country's underdevelopment. The study strongly recommends need for a shift in the political culture towards a more collaborative approach to governance that prioritizes the country's development over partisan interests.