Chaos Game with Shared Middle Zone

Setup

In a small group game of six vs. six, the game is played over a longitudinally narrow and horizontally tight field. Yellow plays against White. Another field of the same shape with two other teams (also Yellow against White) is laid across the first field, creating a cross where the middle of the two fields overlaps.
The teams play both horizontally and vertically against each other. In the middle zone, players play for both teams. Players in the middle zone are not allowed to enter another field.
This setup demands a high focus on game intelligence and checking over the shoulder, as well as a great deal of communication and quick understanding of the movements of the players' second team.