The Game Designer Intern is responsible for all aspects of game design in the creation of engaging casual games. Key responsibilities include creating detailed design documents, defining game rules and balancing, designing missions, levels, and environments, and writing game narrative and text. The intern will work under the guidance of senior game designers, contributing to prototypes and projects, adapting or producing gameplay content, and researching games and platforms. They will also be involved in sharing knowledge and experience, detecting and solving project issues, collaborating with artists and programmers to fulfill the creative vision, and improving workflows and team organization. The intern will create and update materials based on feedback.