I don't think games are a good tool for educating adults about new concepts, they are time-consuming and distracting. You could use them to teach kids, but why would you want to teach kids about Bitcoin in the first place, it's not like they will be using it till they grow up.
Adults play games to relax and have fun, and educational games generally have poor gameplay, so I can't imagine such game being popular.
This might be a fair point, actually. At first, I thought it was a great idea, but if the game's heavily educational rather than a cool game on its own which somewhat touches on the topic of Bitcoin, it's not likely that it would become popular. When people want to learn something, they read an article or watch a video, but probably don't play a game. However, since Bitcoin is largely unknown to any sort of audience, the game could adjust to the academic curriculum and pushed as something that could be used in Economics classes in high school. The usage of games to make students interested is getting more and more popular (I, for instance, use Kahoot quite often as a teacher, and teenagers enjoy it), so if this game's education, it can fit right in. In that case, however, it should probably be more about different kinds of money, Bitcoin should not be a single topic. And it should be possible to play it for, like, 5-10 minutes in a classroom.