Brazil
While modern day Brazil has briefly been explored in the Assassin’s Creed series before in 3, the Amazon rainforest and Brazil in the past, unfortunately, didn’t make an appearance. With tribes inhabiting the wilderness, completely separated from civilization, there is definitely a potential storyline here in the form of defending these tribes against the invading Templars.
Flitting in between the streets of urban Brazil and the wild rural stretches of the Amazon rainforest could make for a truly diverse experience not commonly seen in the Assassin’s Creed series. Brazil is known to have some of the oldest civilizations and landmarks in the world and so exploring these in the distant past could provide for some truly exciting gameplay and discovery opportunities for players.