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 was true, it is hard to compete with those competitive games out there especially they set a certain standard in that field. Maybe this was a good idea but I dont think it will be so popular,maybe it is possible if you atleast integrate some features you can see with those leading games.