This is a site with some lightly entertaining games. The bloodtype game for example
makes you aware of different bloodtypes and how you can be tested for one.
Probably something for biology class. The games are not entertaining for me, but a challenge in class
to be graded on highscore will probably drill the bloodtypes right in. A serious game should always be used in addition to external real-life feedback, application or stimuli.
There are a lot of subjects to choose from on this site, all nobelprize related.
Explore a little.