Green Man Gaming has the Sid Meier's Civilization V: Gods & Kings Expansion Pack (PC) on pre-order for $27 - 25% off with coupon code CIVGO-DSAND-KINGS
[Exp 6/14] = $23
with free shipping. Features new types of city-states, quests, and systems for land and naval combat. Includes nine new civilizations, a new religion facet to the game, and enhanced diplomacy and espionage. Scheduled for release June 19th.