As a brand planner for the European and American markets, the responsibilities include planning and participating in brand promotion activities for the game "Love and Deepspace" based on product version nodes. This involves developing creative and executable brand event marketing solutions, including communication of needs, promotion of version selling points, and material production to achieve brand exposure and marketing goals. Additionally, the role requires coordinating with the team to execute online and offline marketing plans in the European and American regions, reviewing effectiveness, and analyzing data. It also involves establishing and maintaining cooperative relationships with overseas suppliers, participating in the development and maintenance of cross-industry cooperation in the European and American regions, and promoting the integration of various resources.