So Kid Icarus Uprising got a 40/40 from Famitsu

[Typhoid]

Basically before each level you bet on how well you think you can do vs certain odds. So the higher your bet the more difficult the level, but the better items you find and the more money you win at the end.

I actually really really like that idea. I think that should be adopted for a lot of games, if not all of them.

Not only does it teach kids about how to determine odds, and betting, but it gives actual incentive to factor risk vs reward.