Source code of Planet of the Feebs was used for the creation of The Feebs War. It has been changed to an object-oriented approach, and now it is possible modify or add new rules by creating methods for some basic functions.
The Feebs War has no graphics yet but is intended to run using lispbuilder-sdl library. The text-based version can be downloaded from the project home page. The source code and documentation can be browsed online. There is PDF documentation.