A Cowboy on Mars

From the Introduction: When Edgar Rice Burroughs published his first tale in 1912, Under the Moons of Mars, the genre of scientific planetary romance was born. Also known as sword-and-planet tales, these stories of swashbuckling heroes facing outrageous danger and finding true love on exotic, alien worlds quickly became immensely popular. With this setting chapter, you can find your own adventure as A Cowboy on Mars!