If you want to try the development version, then you need to get the files from cvs.
KGameOfLife SourceForge.net CVS repository can be checked out through anonymous (pserver) CVS with the following instruction set. When prompted for a password for anonymous, simply press the Enter key.
cvs -d:pserver:anonymous@cvs.kgameoflife.sourceforge.net:/cvsroot/kgameoflife login cvs -z3 -d:pserver:anonymous@cvs.kgameoflife.sourceforge.net:/cvsroot/kgameoflife co kgameoflife