Cant read the article, BUT

1)Seems like if the ais knew it was a game, then theyd go nuklear because why not. If they did NOT know it was a game... well have you ever tried to use an ai to do ANYTHING antsocial? They refuse all day long!

2) seems like a fun thing to set up on your own. Id do it like a tabletop game with a computer DM to decide the outcomes ofveach turn. Maybe a human in the loop to make sure the numbers made sense.