The Civ5 Battle Royale is huge but the concept of the show is pretty simple! On a massive world map, 61 AI Civilizations go at it to see which one can be the last one standing. No human intervention in the show as a several months long game is recorded and then curated into episodes across the action. Right now the community has arrived at the 6th episode already. If you are curious, then check them out here.
