This study describes the use of a game-based writing environment (GWE) to increase textual cohesion in students' writing and improve their writing attitude. The participants were 113 third-grade students in Taiwan; the study was conducted over two semesters. A GWE was used for the experimental group (n = 56), and a conventional writing environment was used for the control group (n = 57). Both environments were constructed using the Reading for Creating and Talking for Revising writing model, which has helped students overcome writing difficulties. The GWE provided management-related game elements and a game-based feedback mechanism in the form of peer response and created a setting in which students could engage in more writing activity, pay more attention to their writing, and improve their writing skills. The results indicated that the experimental group performed better than the control group in referential cohesion and in terms of their affective, challenge, and qualified attitudes. We speculate that the GWE strengthens students' textual cohesion and writing attitude.