Design pattern approaches have long been used in diverse fields such as architecture, software engineering, and interaction design. With the emergence of game scholarship, there has been interest in applying design patterns to aspects of game design. My interest in design patterns has primarily been for level design, but have also done some exploration of gameplay patterns.
There are many potential benefits to design pattern approaches, including exploring new ideas and providing frameworks for teaching and communicating. Furthermore, deeper understanding of the patterns implicit in their games can help designers better understand expectations of player behavior.
For the most current info on level design pattern research, please visit the website.
Designers and researchers interested in design patterns should also visit Staffan Björk's Game Design Patterns 2.0 and Gillian Smith's RPG Design Patterns.
I was co-chair of the first Workshop on Design Patterns in Games, co-located with with FDG 2012 on May 29, 2012.