Here are links to posts I’ve written about various aspects of game design:

Mechanics

• Challenge, and how to avoid it
• Friend or foe? (RPG mechanics)
• LA Noire: Just One Doubt (conversation mechanics)
• Choice: analogue and digital

Narrative

• Adventures in Time and Space: linearity and variability in interactive narrative
• An exposition about exposition
• Choices in the context of context
• Set-pieces, pacing and flow

• Story design, game design, and the truth
• Planning to programming