
Nepekifaki: Settlements built adjacent to Navigable Rivers gain increased Food on River tiles, but Cities not built adjacent to a Navigable River receive less Food.
Kispoko Nena'to: Unique Infantry Unit. Has increased Combat Strength for every Empire Resource.
Hoceepkileni: Unique Missionary Unit. Has increased movement, and Rivers do not end movement.
Serpent Mound: Adds Science. Increased Science and Production to all Unique Improvements. Must be placed on a Grassland tile.
Mawaskawe Skote: Unique Improvement. Adds Food. Increased Gold for each adjacent Resource. Must be placed on a Vegetated tile not adjacent to another Mawaskawe Skote.
Economic
Diplomatic
Rivers
Grassland
Plains
Coast