Careers Game Design for 6-12 year olds

We have recently launched a career information site. We want to introduce a simple game-based module for the site where students earn points for answering facts about careers but also have fun. For example dressing like the career, chasing objects related to the career and putting them into their back pack as a way to unlock prizes. The database of information is available as a series of flat text files that can be easily converted by system developers and skilled database users to any database format needed. Please send examples of educational games you have designed that are currently in use by students and schools. Thank you, Karen