Arkeos was published in the guise of small magazines with the first one being the core rule book.
This third issue covered the following topics :
Les lois de la magie (page 3 to 34)All the needed rules to let magic enter the world of the 1930s, including:
rituals, alchemy, relics and artifacts of power, monstrous powers and weaknesses, creatures of the night
focus on some mystic traditions: Bönpo, tibetan monastery, voodoo, christendom and the Inquisition
two new archetypes: magician and mystical warrior
L'Asie (page 35 to 76)Setting section presenting Asia with a large focus on China and colonial presence of occidental nations.
campagne Arkeos (page 77 to 98)Three new stories that take place right after the ones from [item=149813] to continue the campaign.
OtherThe interior page of the back cover features an magic sheet that can be used by players to record the spells they know.