Setup: Setup is cycled -- DS#1, LS#1, DS#2, LS#2, etc. -- where normal setup rules apply, but the "1" players match up and the "2" players match up, etc.
Force: Each player gets 4 Force per turn.
Build Step: One build roll is made for all players. Each player gets their own individual bonuses.
Possession: Any card that indicates "you" or "your opponent" applies only to the individual's units (see prevention exception). If an opponent must be designated, the owner of the effect gets to designate the opponent.
Subtypes: If an effect refers to a subtype without the "your" or "your opponent" qualifier, then all units of all players with the specified subtype are affected.
Prevention: Prevention effects and abilities can be played on any of your team's units. However, the owner of the effect must pay the force cost.
Stacking: The same team may stack units together. The owner of the top card controls the unit and pays any costs, to include contesting.
For each additional pair of players, the stacking limit is increased by 1 card. Four players may stack up to 5 cards. Six players may stack up to 6 cards.
Single player build: The single player builds to 60 and may take a second mulligan after reaching or exceeding 30.
Single player Force: The single player gets 4 Force per turn. Double players get 2 Force per turn.
Build: One build roll is made. The roll is divided between the double players (as they see fit).