What the title states. Several matches over the past month the obvious collaboration between players has rached a new high point. With wide open, no risk, easy pickings attacks that could be made players will stockpile even more troops next to it and then head off to simply troll other players. No alliances were available and no emote "handshakes" were seen. It is worse than win trading in mmo pvp matches. We need the option to block players from joining our games and/or a better way to report the offenders. Them and the ones that somehow seem to have twice as many troops after the first few rounds.