https://en.wikipedia.org/wiki/Bughouse_chess
One of the funnier aspects of casual chess club play is Bughouse Chess. For the uninitiated, two pairs face off, each team member takes 1 color, when you capture a piece it is passed on to your teammate who can spawn it anywhere on his/her board in lieu of making a move. There are House Rules in place, usually to prevent players from spawning an advanced pawn (beyond the 4th row) because of the promotion threat.
A variant I'm thinking off for X-WIng is for each pair to bring 3 lists - 1 Scum, 1 Imperial and 1 Rebel. Start of the match up, each team chooses 1 list, then they play off. ie Team A chooses Scum, Team B chooses Imperial, so they play a Scum vs Imperial and an Imperial vs Scum match. Once you eliminate an opposing ship, it is passed to your teammate sans upgrades (just the base ship).
Spawning a ship - At the start of a turn, you may place 1 ship from your reserves into play on your starting zone, following all normal ship placement rules. It cannot be assigned a maneuver this turn and is immune to all damage. If another ship would bump it, remove the spawned ship from play and place it at any other legal location. (alternate rules : force it to make a specific maneuver at PS 13 and attack as PS -1)
Winning the game : When a single player is eliminated, the whole team is eliminated. Or when a player has scored a total of 100 points of kills. Or when combined team has scored a total of 200 points of kills. (it can happen that if two pairs of swarms face off, you will have a lot of swapping of ships around and infinitely replenishing forces that are unable to one-shot each other, thus the points system has to come into play)
Edited by spacelion