Staple Setups Edit
These are the better-known ways of setting up a multiplayer game, that often work within multiple formats.
Attack-Right (or Attack-Left...)
More sophisticated setups Edit
These are setups that warp the game in a way such that it can hardly be called "normal Magic" anymore, if there is such a thing. People may build decks that are specific for these setups, making them closer to formats.
New / Lesser known setups Edit
What special ideas to spice up multiplayer have you developed and tested, or seen somewhere, and would like to share?