Did you frame it in terms of the problems you solved rather than the game part? While the interviewer may have a bias against games, it could be spun as "I lear

Did you frame it in terms of the problems you solved rather than the game part? While the interviewer may have a bias against games, it could be spun as "I learned a complicated technology to build this game" or "in order to build this game I had to keep refreshes under XXms which required an innovative solution to state handling". Or perhaps "yes it is a game, but I use it to keep my skills sharp. I use the game to push my boundaries and practice good coding skills, and bring those improvements to my day job"