Best geography games and apps?? 🌎🔥💖

Hey everyone!!! I’ve been so obsessed with learning new things lately and I want to become a total trivia master! 🌟 Does anyone have any amazing book or app recommendations for learning world flags or geography? I really want to challenge myself and get as smart as possible!! 💖 I've started looking at maps of landlocked countries but I need more resources! Also, are there any fun websites for practicing mental math or trivia? I want to be ready for any challenge that comes my way! Love you guys and keep learning! ❤️✨🔥