After The Bomb
Those who love role-playing books and games should know about Palladium Books. Started in 1981, the Detroit-based company put out a few books before hitting it big with the Teenage Mutant Ninja Turtles series as well as the Rifts series.
Mirage Studios actually created TMNT and held the copyrights, however, they made a deal with Palladium to create the TMNT RPG series, and the first book Palladium pushed out was the TMNT sourcebook.
Starting in 1986, Palladium released shorter supplement books to go along with characters created from the TMNT sourcebook. The first to be released was After The Bomb. That story begins after “The Big Death” of the late 21st century. “The Big Death” began with a war, then a plague and eventually ended with a nuclear winter, which caused some survivors to mutate into creatures.
You can play as a mutant animal going against the evil human empire or vice versa. After The Bomb takes place on the Eastern United States seaboard from Georgia to New England.
Due to overwhelming fan response, the second release, titled Road Hogs, took place on the western seaboard of the United States. Overall, the After The Bomb series included six books from 1986 to 1992, ending with Mutants in Orbit. I suppose they were able to advance after “The Big Death” and head to Mars.
Palladium Books is still around as of May 2017. They survived embezzlement & financial issues in the mid-2000s, and still has a loyal following.