The world of Lost Tribes is set in a gigantic forest, divided by a large navigable river so-called "The Great River". There's fata live, some fey beings magical nature are in perfect balance with nature. Are their protectors and simultaneously, the environment gives them everything they need.There are 3 tribes of fata, each associated with a sap. This will modulates the character, appearance, their role in society and magic type. The green fata are the most numerous, their magic specializes in communicating with animals, agility and camouflage. Blue fata spend much time in the water, its magic specializes in water control, healing and divination. Red fata live in caves, and are more independent tribe that green and blue, his magic specializes in fire control, strength and endurance. The fata tattoo sap, which have magical properties and are part of traditional European culture (Celtic motifs) are made.This natural harmony is broken by the invasion of a group of humans who call themselves The Initiative. Landed on the coast of the fata jungle with an army of steam engines and one goal: to seize the natural resources from fata civilization to fuel its machinery.The Initiative is a large corporation based in the industrialization of the early twentieth century, where the black steam, steel and metal, gray or black tones are always present. It steampunk influences.The main conflict is: fata against The Initiative, or magic against technology, secondary conflicts are internal between the fata and the Initiative.The player takes control of a tribe of fata. Its mission will make it prosper, defending the invasion of The Initiative and trace the Grand River in search of the lost tribes.