This, naturally caught my eye...
Joan Ganz Cooney Center at Sesame Workshop and E-Line Media to Award
Youth and Developers Prizes for Creating STEM Based Video Games
Even better, there are two categories, one for middle schoolers (grades 5-8) and one for college students and adults.
Even Mo Better!!!!!!
"Special emphasis will be placed on technologies that have high potential to reach underserved communities, such as games built for basic mobile phones that address urgent educational needs among at- risk youth."
While this mentions phones specifically I'd bet that OLPC could qualify as well, especially since AMD sponsors ths contest and was an original sponsor of OLPC
Full information below...