Half Life 2: Dominion

The Citizen Exchange Market operates from a repurposed department store where citizens may trade personal possessions within strict regulations. All items undergo scanning for contraband, recording in Combine databases, and value assessment based on approved exchange rates. Trades require authorization from overseeing CP officers who take a "transaction tax" from each exchange. The market prohibits trading of communication devices, tools usable as weapons, or unauthorized food items. Citizens may exchange clothing, basic decorative items, and approved entertainment devices, with every transaction affecting loyalty scores. Combine cameras monitor all interactions while automated announcements remind participants that the privilege of exchange exists through Combine benevolence, creating an atmosphere of nervous commerce under watchful eyes.

The market resembles a former department store, with aisles lined with tables displaying approved items for trade. Combine cameras are mounted on every corner, and automated announcements echo throughout, reminding citizens of the Combine's benevolence as they nervously conduct their exchanges.