@inproceedings{FDG-2009-Eagle,
	author        = "Michael Eagle",
	booktitle     = "{Proceedings of the Fourth International Conference on Foundations of Digital Games}",
	doi           = "10.1145/1536513.1536575",
	isbn          = "978-1-60558-437-9",
	pages         = "339--341",
	publisher     = "{ACM}",
	title         = "{Level up: a frame work for the design and evaluation of educational games}",
	year          = 2009,
}