In addition to our 'Code Review Challenge' that I discussed recently, we have been using another retrospective game - 'Name That Standard'.
The idea is fairly simple. At the beginning of any retrospective, we go around the room and ask each team member to list out a standard that we are using in our project. This can be any standard that anyone feels the team is using or needs to be using, including coding conventions, architectural patterns, business and project management processes, communication means, etc. The intention is similar to the intent of 'The Code Review Challenge' - socialization of the the system. Only in this case, we are applying the term 'the system' at a much higher level - our organizational and project management / implementation system as a whole.
Some thoughts on running 'Name That Standard':
In our implementations of this game, we've managed to get a fairly good list of standards written down and also resolved some questions on what standards we actually are using. For example, we had 3 dynamic mocking frameworks in our code base - Rhino Mocks, Moq, and a home grown one that we lovingly called 'BrandoMocks' (named for our team member, Brandon, who wrote it for fun one night). The end result of that discussion was to throw out Moq and BrandoMocks, adopting Rhino Mocks as our standard for this project.
Having done 'Name That Standard' in two consecutive iteration retrospectives, I think I can say that it has been very successful. The team as a whole is becoming more and more aware of the standards that we are using, and the individual members are beginning to contribute more and more to the standards.
With each passing iteration, and each new technique for creating collective ownership and socializing the system, I see the team coming together and really forming a team vs. a bunch of individual developers working on the same system.
Disclaimer The opinions expressed herein are my own personal opinions and do not represent my employer's view in any way.