A site called Check Your HUD has put together a family tree of game developers. What I like most about this is the attempt to show the relationships between the companies including: mergers, splits, name changes, and companies formed by former members of another company.
If you are familiar with the Silicon Valley Genealogy Chart, this is along the same lines.
We’ll return to social network analysis and corporate relationships in some future postings.
(Tip of the hat to Kotaku for the link.)