From the introduction:
Role-playing Adventures with Colossal Cave(wo)men and Cackling Chimps
In "Hominids!" players will assume the role of cave(wo)men and chimps in an age long gone. You will fight for your daily survival, the right to mate and the right to eat bananas. In every moment you are threatened by lightning, wild animals, hunger and the danger of not getting someone (or something) to mate with. Your life (as short as it was in those times) will be filled with excitement, fear of diseases, the desire for bananas and - did we already mention it? - the urge to mate with someone (or something).
Originally published as text in 1995; published in 2008 as PDF (possibly by a third party).