The World of Nero

In a galaxy far, far away...
Well, imagine a planet somewhat similar to Earth. Slightly larger, orbiting a yellow, slightly greenish star, at a distance that allows for some areas on the surface to have snow that doesn't melt, while in other areas, it's almost boiling hot. Imagine that two not-so-small satellites orbit the planet, both slightly smaller than our Moon, creating a rather curious and somewhat amusing system of tides. This is the planet Nero.
Nero (with the emphasis on the 'o') is a word that means water and also serves as the name of this world (it can simply be called Water). Why is it named that way? It happened historically. In times when science in all its forms was not very developed, there was a belief that all the land floated in a huge (in some opinions, infinite) ocean. So, the world was named Water, Nero, and by the time they found out what was really going on, it was too late to change anything.
Nero has intelligent humanoids, who are the dominant species on the planet. Most of the other living creatures that inhabit Nero are analogous to existing or extinct Earth animals or plants. There are also mythical creatures, some of which even possess magical abilities.
Magic needs to be discussed separately. Modern science on Nero (and it should be noted that science on Nero is being developed precisely by humanoids, although not much is known about its past, and it is possible that there were attempts at scientific research by someone else) studies it just like any other field, and some peoples study magic especially thoroughly. The attitude towards magic there is not as something completely incomprehensible and uncontrollable, but as a completely ordinary thing, a kind of feature of either the body of some humanoids, or something else. Yes, there is no single opinion on the origin of magic yet, and humanoids have only recently begun to think about the merging of magicology and physics, but the question of the application of magic has already been studied enough, which allows individual humanoids who have knowledge in this area to control their abilities.
As for humanoids in general. There are five currently living races on Nero: humans, mages, elves, dwarves, and troglodytes; within each race, there are several nations, of which two are usually the most common. It is also possible to occasionally find traces of the Antos, an ancient, long-extinct civilization. It should be noted that in this world, it is not customary to classify humanoids as mammals, if only because troglodytes, possessing obvious similarities with other humanoids, are closer in structure to reptiles.
Each nation (with the exception of the relatively undeveloped troglodytes) is associated with a relatively large state(s), where the population of this nation predominates. There are many smaller states, some of which are already on the world map, and others players can come up with themselves when writing biographies, provided that they are not too large and do not contradict what has already been created.
The world map with the continents labeled is in the next post. If you describe it in general, there are five continents: Salinkari, Sarantoda, Feron, Western and Eastern Petalody. The first continent is the largest and is home to most of the peoples. In general, you can find representatives of almost every one of them there, with the exception of dwarves, who live on Feron. On the other continents, which were discovered relatively late, the interests of various countries and peoples intersect; these are mainly colonies, and not everywhere.
The game will begin in the Mediterranean Ocean, on the Kro archipelago, on which (actually, not only on it) is located the state of the same name.