I created a game for catholics. A specific market niche would be a mistake?

My first game for Android was "Que santo sou eu?", "What saint am I?" in English, it was published only in Brazil. As the name suggests, it's a game for Catholics. In this game, there are 100 saints of the Catholic Church, with photo, name and one tip. For play, you need to put your phone in your forehead and your friends will tell you the tips about the saints that are showed in screen. If you get it right, turn phone up, if you get it wrong, turn phone down.

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https://www.hs.dev.br/devlogs/i-created-a-game-for-catholics-a-specific-market-n...