A More Perfect Heaven: How Copernicus Revolutionised the Cosmos
Dava Sobel
The Salt Roads
Nalo Hopkinson
The Worlds of Robert A. Heinlein
Robert A. Heinlein
The Three-Body Problem
Cixin Liu
Achievement Relocked: Loss Aversion and Game Design
Geoffrey Engelstein
Playful Thinking (1)
Works of Game: On the Aesthetics of Games and Art
John Sharp
Play Matters
Miguel Sicart
Uncertainty in Games
Greg Costikyan