After a team wins any of these modes they will be able to fight each other with only 1 life. In eggwars the remaining team is teleported to mid and all player placed blocks are removed. In sg it just allows the team to kill each other withouth needing anything else. Skywars allows the team to kill each other withouth needing anything else. This fight does not do anything other than for bants, seeing how your teamates fare against you, and to get revenge on that guy that did nothing all game, or the person that trolled you.