what does it mean to be human? Putting human genes in animals starts to blur the human animal division. This is a reason for people NOT to do it. For me it is more a reason to do it.
Finally a game half open. You start with a small creature and when you make offspring you go to an editor to design them. At any time the game populates the system with creatures designed by other players. First 2d, then 3d water, then walk
C. Kaleta, F. Centler, and P. Dittrich. 34, page 117-124. Humana Press, (October 2006)Proceedings of the 7 th Conference on Protein Expression in Animal Cells(PEACe).