The Hunnic Empire

It's all temperate, about the same temperature as the UK.

Borders are vague due to their nomadic nature. The territory is often known as the Great Plains.

https://en.m.wikipedia.org/wiki/Great_Hungarian_Plain

Similar in many ways to the Wild Lands.

Rome is facing troubles from the Huns https://en.wikipedia.org/wiki/Attila#Campaigns_against_the_Eastern_Roman_Empire

However this is easier said than done, though Rome has expanded her borders to cover the fractured Hellenic City States and some of the lands above her, it has found the Orcs of Germania are a tougher foe, as are the monstrous races who dwell with the Orcs in Germania. It is not known to what degree the Orcs have a system of rulers and borders, any attempt to expand borders into Germania has always failed and more adventurers perish in Germania than anywhere else – however a small minority of Orcs and Half-Orcs have travelled south and integrated into Roman society. And the young Empire faces another enemy to the East, another army marched from Asia soon after the Mongol Horde. The Hunnic Empire has arisen, led by the greatly feared and brutal warlord Attilla. The Huns have pointed ears and pink skin, and are never far from their mounts, they clashed frequently with Germania at first but now mainly seem to target Roman territories – a small minority of Huns have also integrated into Roman society.

Treacherous journeys across the unclaimed Balkans. Vampires - Castlevania.

Demographics and Borders
Races: Mainly Wood Elves but also Orcs, Goblinkind. Vampires in Romanusia.

Borders: All to the East of the Path of Illyricum https://upload.wikimedia.org/wikipedia/commons/7/76/Augusto_30aC_-_6dC_55%25CS_jpg.JPG

Plothooks
Witch trials. Particularly bleak work missions. Bureaucratic ‘glory to the republic comrade’ types. Revolutionaries. Vampires (old timey creepy manors). The Witcher-type stuff (girls in the pond and that sort of thing), make it bleak! Monsters like griffins and stuff. Remember it’s a more temperate climate than Britain.

Horse culture and archery stuff. Hunts.