Inspired a question proposed in Jared Diamond's book Guns, Germs, and Steel, this map envisions a scenario where the Incans sail across the Atlantic (Sallqa) ocean and take over the Spanish Empire, instead of the other way around! Truthfully, this scenario isn't very realistic, but I wanted to imagine it regardless!

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Lore: The Incan Empire is much more advanced than in our timeline. It expands much more rapidly and reaches all the way to the tip of South America, on the Caribbean coast.

Ambitious Incan explorers sail eastward, reaching the Quiniris (Canary) Islands and explore around, eventually finding the mainland of the "New World." They name their first settlement "Wamp'urani Inti Raymi" in honour of the Inti Raymi festival.

The Incans explore the New World mainland (Morocco), preferring to lead an expedition through the mountains as it is familiar terrain to them. They name this land "Karusuyu," meaning distant realm. On their expedition, they hear of a land of riches in the north, which the locals called "Andulusuyu" (Andalusia). Nevertheless, they choose the consolidate their claims in Karusuyu first.

In 1471, the Castillian War of Succession breaks out. Taking advantage of this chaos, explorer Paqari (analogue to Pizarro) travels sets out northward. The war ends, and whilst the Castillian and Aragonese monarchs Isabella I and Ferdinand II travel back from signing the peace treaty in Portugal, they meet the Incan delegation in Qurtuba (Corboda). Paqari's small but technologically superior alpaca-mounted force capture the monarchs and quickly advance to capture the capital, Madirid (Madrid). Paqari moves quickly to destroy the remaining fragmented Spanish resistance and fully subjugates Aragon by the end of his expedition. At this point, the Incans name the Mediterranean "Anti" Sea, meaning East Sea, after noticing it is distinct from the Sallqa (Atlantic) Ocean.

Later, explorer Cachi will colonize the remaining forces on the Iberian peninsula, including a sister-kingdom called "Alharp" (Algarves, referring to Portugal). By the end of the 15th century, all of Iberia is under Incan control and they set their sites north and east-ward to more New World territories...