Final Fantasy XIV
As more information of Final Fantasy XIV came to public, Square-Enix has recently updated its official site. More details which previously scattered in Japenese websites and magazines are now available in English. FFXI Gil, Now you can read at the website about the 3 key systems: Amoury, Giuldleves, and Aetheryte.
Amoury system: Amoury system is one of the foundations of the Final Fantasy XIV experience, simultaneously being both the impetus behind character development and a key factor determing individual gameplay. By merely equipping any of a variety of weapons or tools, players can instantly change their active skills, thus enabling them to dramatically alter their style of play as well as their charcter's outward appearance.
Guildleves: Guildleves are small, rectangular plates made of stained crystal set into a frame of precious metal, each depicting a virtuous deed of one of Eorzea's patron saints, also known as "guardians." When issuing tasks or quests, guilds will often provide adventurers with theseplates, allowing their bearers "leave" to take whatever steps necessary to compete the jobs, including entry into normally restricted areas, hunting or harvesting on private lands, the confiscation of goods, even negotiations with those considered enemies of the city-states. Guildleves also grant use of aetheryte portals, ensuring quick travel about the region.
Aetheryte: Aetheryte is the name given to massive shards of crystallized aetheric mist, precisely cut and fused to arcane machinery. While it is not known when or by whom these devices were originally constructed, their teleportational qualities have become the backbone of everyday transportation throughout the realm, with most managed and operated by individual city-states.