A permanent, unbreakable alliance between
two (or more) colluding players in multiplayer games, especially diplomacy board games, where they always team up no matter the circumstances. Widely considered a lame and shameful strategy, it preempts all meaningful negotiation and dynamic gameplay—pure
pussy tactics. No gamer would ever laud this
bullshit. The philosopher John Rawls coined the idea of a "veil of ignorance" (pre-
random draw) as a way of constructing a just framework—one in which nobody knows what their own circumstance
will be from the start. Many people register this in their innate sense of justice. Permalliance shits on this principle. As a general rule-of-thumb: when chumboys flock, game theory sucks cock.
Twilight Imperium IV is a fun and exciting
game of epic galactic conquest, but Brandon and Shane have a chummy permalliance—they're permanently in collusion
like Russia and North Korea so don't expect any real diplomacy to happen and prepare countermeasures to contain them!