I've released a version 0.0.3 of hback based on the current HEAD of the darcs repo. From the end-user's perspective, there are three major changes: 1. Game now tries to accurately duplicate the protocol described in the original PNAS paper [0]. If there are any deviations, please do let me know. 2. The game should now correctly build with all dependencies and correctly locate all data at runtime that was copied during installation. If there are any issues with this, it's a bug - please do report it. 3. The graphics are now rendered as SVG (which means the cairo lib installed on the system will need to support SVG). Cabal file can be found on hackage: http://hackage.haskell.org/packages/archive/hback/0.0.3/hback-0.0.3.tar.gz If you prefer to keep up-to-date with changes, checkout the repo instead: darcs get --partial http://code.haskell.org/hback/ And the new project homepage: http://code.google.com/p/hback/ Thanks to everyone who showed an interest in the program; it's really helpful in encouraging me to continue tinkering with it. As always, all suggestions and comments sincerely welcome, Norbert Wojtowicz [0] http://www.pnas.org/cgi/content/abstract/0801268105v1