i think this might be not too hard to code on this site :

4 players playing espionage, 2 players per team, 2 teams per game
each player has 1 side of the board, teammates on opposite sides
so there are 4 flags on the board

players are allowed to communicate, teammates can discuss their tactics (as in real life 'espionage')

players move (counter) clockwise, so first player 1, (team a), then player 2 (team b), then player 3 (team a), then player 4 (team b)

as soon as 1 flag is captured that team loses and the 2 players of the other team win. each player gets his bkr adjusted individually

what problems could there be ? (aside from the problem of 4 players being able to use more time before everyone has made 1 turn)