Hi

Can anyone help me with references about adults playing computer games as
part of the family, for instance, parents who use the computer for work

More anecdotal than scholarly, but the documentary Avatars Online (available on the web for purchase at a reasonable price) has some nice examples of this. It focusses mainly on Everquest. It's a terrific teaching resource.

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Nancy Baym      http://www.ku.edu/home/nbaym
Communication Studies, University of Kansas
102 Bailey Hall, 1440 Jayhawk Blvd., Lawrence, KS 66045, USA
Association of Internet Researchers: http://aoir.org