I remember in a cognitive science class we were asked to classify games, that is define them based on our knowledge of the parts that make up a game. This is much more difficult than it seems but is a great way to start discussing all types of games, and ensures that students consider games other than point-and-shoot. Wikipedia offers an inkling of the enlightened discussions and definitions we held in that class!
- Creating sprites (avatars): http://gamedesign.wikidot.com/spriteart:tutorials
- Step-by-step to design your own game: http://www.squidoo.com/gamedesignconcept
- Select programming language to design game with