1. Adams, E. (2001). Replayability, Part One: Narrative. Gamasutra, Retrieved from May 21. .
2. An overview of gaming terminology: Chapters I–LXXVI;Aldrich,2009
3. Finding that special place: Designing digital game-based learning environments;An;TechTrends,2009
4. Revealing new hidden curriculum and pedagogy of digital games;Baek,2009
5. Dungeons and desktops: The history of computer role-playing games;Barton,2008