In the Japanese version of Final Fantasy Tactics, there are a series of minigames that can be unlocked by discovering certain Artefacts. The Artefacts and Wonders have no in-game effect and just exist as fan service. Your characters can discover either Artefacts (items that come from other Final Fantasy games and real world mythology) or Wonders (abandoned locations from other Final Fantasy games). These usually involve them disappearing for a few days worth of travel, and returning with lots of experience & job points, and occasionally, some unique items. As you progress through the story of Final Fantasy Tactics, you will be given the opportunity to send some of your party members off on specific missions.
