I read in the patch notes that passes are being made to implement a basic form of AI, but I havent found a way to play with AI in the game.
Custom game -> publish (after adding in one more spot than the number of ai you wanna fight) -> hit ready. You will take the first slot, and the game should flip to "starting game" after a bit, and will load an ai into each slot left open.
Also, I've seen on here that other people can join your game if you wait too long, but with my region set to US, I've never had that problem....
