Terrapieseven
Uncharitable Spy
There's a wall in the red spawn that when you shoot triggers the minigame choice and teleports everyone out, thus essentially ending the map. The player that started it could also not choose a minigame, stalling the round as long as the round lasts. Also, one (or more, haven't really played that long) of the minigames doesn't end until the round ends, effectively stalling the round as long as possible.