Dead Cities (2009)

from the Introduction:
You are reading Dead Cities, a simple, fast-play post-apocalyptic role-playing game set in 2072, thirty-five years after the majority of humanity was killed by a terrible plague. The players are survivors of that plague or their descendants trying to eke out a living, or, hopefully, rebuild their own pocket of civilization (or even their own empire) out of the vine-choked ruins of the old one.

Dead Cities is based on Chris Gonnerman's excellent The Simple Game System rules.

user comment:
There are slight differences in character generation from the base game. This version of the rules offers an additional ability/disability pair, primitive-advanced, and has a system for the generation of mutations, vehicle rules, firearms, and other differences necessary to support the tropes of the post-apocalyptic genre.

The rules for Dead Cities are available as a free download from Chris Gonnerman's Simple Game System page. See the RPG level entry for a link to the site.