"Virtual Interactive Student-Oriented Learning Environment" ("VISOLE") is a pedagogical approach to integrating constructivist online game-based learning (COGBLe) into formal teaching in school education. This paper reports a qualitative case study on the implementation of VISOLE (in secondary Geography education) in which we probed into the impeding phenomena emerging from the course of students' learning. Four students--"a nongamer student", "a gamer student", "an examination-oriented student", and "an angry student" were the focal units of analysis. Apart from identifying three impeding phenomena--"impromptu gaming," "arbitrary gaming", and "halt gaming", we observed how the teacher tried to mitigate these phenomena during the implementation process. Besides providing the field with a new understanding of harnessing online gaming in teaching and learning from the student perspective, the study revealed the importance of teacher facilitation in COGBLe.