Wolfram Demonstrations is a service offered by Wolfram, the makers of Mathematica to host interactive computable documents (CDF).
Interactive demonstration of the effect of multiple players on the Red King phenomena.
The demonstration is based on the paper on mutualism and multiplayer evolutionary games. Here is the CDF as hosted on the Wolfram Website. You will probably need Mathematica or the Wolfram CDF player to be installed to view the following file