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>Jupiter : Waterproof Mortar
>Un-natural 100!
The Jupiter Tribe made a wondrous discovery in their building material.
Mixing ash, snow-rock and grounded regular crack rock gives a Waterproof mortar.
First, your secret bunkers are waterproofed and their cracks are colmated. Then, your houses are built upon and improved.
The most critical ressource for Jupiter is room, as the Vertical dwelling of the tribe is narrow. The favored way of construction of the tribe is stone-laced mortar houses. The first tries of the new material is promising enough for the tribe to try several-level building next.
Then, the roof are drastically improve by the invention of tiles. But the most curious breakthrough is the tribe's new storage.
A mortar heavy on snowrock builds a earthenware-like suspended building. Sturdy enough to use ledges from behind, claiming new space over the crack's void.
>Breathless : Gate
The Cerulean Tribe comes with a way to maintain contact among tribe : Gates.
The ritual creates an unbelievably short path across the Warp. However, it requires two tribesmember to perform the ritual synchronously to open up the way. Good thing the tribe got access to a Telepathic Trance.
Now...
>How should the tribes evolve?