CiV Bloodmoon

The Bloodmoon Chronicles is a concept of a world with two moons: a larger moon, Aion, that orbits the planet Mythra and a smaller moon, Atropa, that instead orbits the larger moon. Atropa, commonly referred to as "The Bloodmoon," orbits around Aion as such that it periodically waxes and wanes between Aion and the planet Mythra, turning it increasingly red in appearance as it moves closer to the planet. The gravitational effects as Atropa interposes wreak havoc upon the planet causing massive tidal shifts, earthquakes, flares of magical energies trapped within arcane nodes, and fissures from deep within to erupt and unleash hordes of unnatural dimensional beings. Aion's own elliptical orbit places it at varying distances from Mythra, thereby increasing or decreasing the effects of Atropa's interposition depending upon Aion's proximity to the planet.

This is where your tiny ragged band of nomads will begin. Can you build a civilization that will stand the test of time?