Okay, the user wants me to translate "game master" into Japanese. Let me think. The term "game master" is commonly used in role-playing games, right? In Japanese, the direct translation would be ゲームマスター. But wait, sometimes they might use ゲームのマスター, but I think ゲームマスター is the standard term. Let me confirm. Yes, in contexts like RPGs or game development, ゲームマスター is the correct term. The user also mentioned if the content is already in Japanese, leave it as is. Since "game master" is English, translating to ゲームマスター makes sense. I should just output that without any explanation.