Educational games. Hear me out. The way we teach us basically how we did it 500 years ago. This is stupid, boring and not scalable. We dont have enough teachers, attention span is short, education is costly. So we need something that scales, is fun and involves all types of media plus gamifies education. Think Skyrim or GTA meets MS Encarta
I don't believe at all in gamification in education. The kick that inspires new scientists and engineers comes from the gratification of learning or figuring out something as nothing feels better than figuring out how/why something is happening and how to push it to it's edge cases. Even chasing grades is a perverse incentive IMHO.
edit: the 24 card games were really great too, though maybe only if you were already inclined towards math