A pertinent question with that posting history.
Wrt the game, the demo is basically two turns (around Arthur and the Saxons) so hard to get a good idea of the AI. AItough I won on all three attempts (twice as yellow and once as red), so not especially impressed off-hand. Brittania is a very swingy game, so I don’t think this was just luck. I was not impressed by the AI’s defensive game (e.g., as the Welsh, garrisoning the mountains, instead of protecting Dyfed and Gwynedd from the Irish), opportunistic mountain attacks, or its decision - when striking the Romano-British - to attack Arthur with inadequate forces (Artorius + cavalry are 10 straight points… a huge windfall, but opportunistic attacks against him when you have the forces to overwhelm is… dumb). Given these experiences and that good play of this game requires quite a lot of reading the map (to figure out who is doing better than they should and who to form a truce with, knowing which areas to attack and which to vacate strategically), I’m not too optimistic for the AI.
Production values aren’t anything special, but then that’s rarely the case for boardgame adaptions. UX is a bit basic, but the undo functionality is good.