Kids these days sure like their video games. They may even argue that they benefit by developing better hand to eye coordination and faster reflexes.
If you think your children would be better off with an understanding of personal finance concepts, you can propose a few alternative video games. James Flores highlights three of the most interesting personal finance education games at TheFinancialBrand.com -- complete with screenshots and videos.
Children are comfortable with online games, so they may get more out of these exercises than they would from a more traditional lecture. In addition, they get to learn by doing (and they may go bankrupt if they don't make the right choice). It's better to learn about bankruptcy in a simulation than it is to experience it in the real world.
Flores is realistic and questions whether or not anybody will actually use the games. As he notes, with coaxing or creativity, kids will end up playing the games and learning a few things.