Principles 9 and 27

Principle 9: "Self Knowledge Principle"

This states that as we play a game, we come to learn more about ourselves by playing that game.

Principle 27: "Explicit Information On-Demand and Just in Time Principle"

This principle states that bits of information are provided throughout the game precisely when they are needed, as well as being obvious. For example, a player might need to know how to jump over a hole, and at that moment, instructions are given for how to do it (say, press the 'x' button). The author uses this in relation to After Shock, where information kiosks are dispersed throughout the game, each having information immediately pertinent to where the player is located in the game.

-Chandler Krynen