My Entry
I know this may sound silly, but what about..
Destroy the wall.
Basically, you have the most explosive weapons (Besides nuclear ones.) and very powerful veichles (Tanks, Jets, Miniguns, etc.) and must destroy a wall to enter to the other side, those who manage to get to the other side win and their objective now is to prevent the attackers from entering with the same advantage they have. Once all the players have entered the wall, the minigame resets. I am trying to see if their is a event to switch teams when players enter a specific area. Anyways, feel free to contact me via email sickgamers130@gmail.com