It strikes me there is a place for a massively multiplayer online educational finance game. This could take one of two forms, a limited time game or an open-ended world where players join and 'complete' their mission, it would avoid the 'superpower' endstate of IK & TW by setting individual goals for players, so that the strong players are the ones that get knocked out, not the weak ones.
Cashflow focusses mostly on property, since thats where Kiyosaki made his money, but there are a number of markets that could be included. The important part is creating a realistic scenario from which it is possible to learn about financial behaviour, what works and what doesn't.
What I'm envisaging at the moment is a 'long' running game world, based around a (game world) turn length of one month which could happen daily in realworld time.