Online communities devoted to mobile games represent exemplary examples of competitive communities of practice, leveraging the competing forces of cooperation and competition to foster in-group solidarity and motivate members to further engage with the game and community. In this study, latent Dirichlet allocation was used to model conversation topics across over two million posts and comments made during a 3-year period on the r/grandorder subreddit, a competitive community of practice devoted to the mobile game Fate/Grand Order. In total, 20 distinct topics emerged spanning topical foci and emotional tones. The prevalence of certain topics, such as those related to gacha game mechanics, declined as community members mastered the practice and as the practice itself changed. Future studies should compare the structure and evolution of conversations across contexts, and they should likewise examine differences that emerge in discourse due to the relative balance of competitive and cooperative influences.

中文翻译：

---

从 waifus 到鲸鱼：基于手机游戏的竞争性实践社区中的话语演变

专注于手机游戏的在线社区是竞争性实践社区的典范，利用合作和竞争的竞争力来促进群体内的团结并激励成员进一步参与游戏和社区。在这项研究中，潜在的狄利克雷分配被用来模拟 3 年期间在 r/grandorder subreddit 上发表的超过 200 万个帖子和评论的对话主题，r/grandorder subreddit 是一个致力于移动游戏 Fate/Grand Order 的竞争性实践社区。总共出现了 20 个不同的主题，涵盖主题焦点和情感基调。随着社区成员掌握了这种做法以及做法本身发生了变化，某些主题（例如与扭蛋游戏机制相关的主题）的流行程度有所下降。