I saw this little gem over on hackaday (via digg): mySQLgame is a quirky App Engine game that has decided to forgo flashy UIs and just stick with the core of the system: a database. You start the game ...

SQL Island is a text-adventure trying to playfully teach people the SQL database language. It was developed by the German Technische Universität Kaiserslautern. Games metadata is powered by IGDB.com ...