What Does XPAC Mean?
XPAC means Expansion Pack in an online gaming context.
In a gaming context, an XPAC or Expansion Pack is a block of new content for a game that was not included in the initial release.
Usually purchased (as opposed to free), an XPAC typically involves new areas in which the game can be played, new effects, or a completely new scenario (in effect, a new standalone game). The purpose of an XPAC is to extend the life of a game, ensuring players can continue to enjoy the the characters and scenarios they've come to love long after they explored the whole game area, completed every level, or accomplished the set task.
Common XPACs include ones for the following titles:
Assassin's Creed IV
BioShock 2
Bloodborne
Borderlands 2
Dark Souls II
Diablo II
Dragon Age
Fallout 3
Half-Life 2
Mass Effect 2
StarCraft II
The Last of Us
The Witcher 3
Warcraft III
X-COM 2
