Francesca The Hammer 33 and Francesco Cobra 18. They are a team. They work together each game they play together. One game, one of them will shield the other who randomly attacking others. The next game the other will shield the other. Played a game with them, Francesca took Australia early, but only had 5 troops total in all of Australia. Francesco fortified half his troops to Siam to block for Francesca. The other half of his troops, he used to attack other players continents. As soon as Francesca built up a good amount of troops in Australia, he pulled his blockers out of Siam and went and attacked other continents to make sure they couldn’t get any troop bonuses. Clear and obvious collaboration.