I'm looking for a game before that can help me explain to my sister crypto trading and I came with altcoin fantasy crypto trading trainer were it say you can earn while trading and playing though just a penny. But the reward is just an additional since learning is what we're aiming. Some mobile apps just have ads or need some in-app purchase after so it's better to try in some browser. There are many simulator just try where you can understand the process and techniques easily.