Enter Thrones of Britannia, visually it comes across as a fairly obvious attempt to capitalize on the popularity of TV shows like Game of Thrones and Vikings. Of course that's just my take. Going by the comments posted in various places around the internet it's actually a reskin of Attila. That might be true for the rendering engine, but given the time period and setting calling Thrones of Britannia a remake of Medieval: Total War - Viking Invasion is probably more accurate statement. Then again that stand-alone expansion (rebranded recently as "Total War Sagas") came out way back in 2003 which means it's more ancient than the Dark Ages by video game standards.
straw man for a moment...*ahem*... "I'm engaging in a hardcore piece of interactive history and not a crude approximation made purely for entertainment value." In that sense the art, which is abstract and yet reminiscent of the era, is actually spot-on in terms of what Thrones of Britannia really represents.
It's a shame because at its core, Total War is an interesting concept. If the devs had adopted a more aggressive policy of improving on gameplay mechanics, paying proper lip-service to actual history, and working on creating something better than brain-dead A.I. behavior then it could have been one of the all time greats of the strategy genre. As is though it has gone the way of the mediocre click fests wherein everyone plays too far zoomed out to notice any nuance or detail.