According to the official website this area is called as Main Continent only. Take a look here.
Note: Some NPCs Captain take you back to the Main Continent by you saying "Tibia" to them.
SOURCE: Tibia.com
Tibia is the name of the largest landmass in the game Tibia. It is commonly called "the continent", "Mainland Tibia", "the Mainland", or simply "Main".Tibia is accessible to every free account player who has mastered Dawnport (pr........ so this includes thais and venore for sure, also others NPC will refer to it as tibia, for example the ferryman at folda's dock you can only get back to the continent saying the word tibia, this is the same for the NPC that takes you to the isle of the kings
Source: https://tibia.fandom.com/wiki/Tibia_(Continent)
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