Final Fantasy XIII-2 is a role-playing video game sequel to Final Fantasy XIII. As in the previous game, the player controls their on-screen character through a third-person perspective to interact with people, objects, and enemies throughout the game. The player can also turn the camera around the characters, providing a 360° view. XIII-2 has a world rendered to scale relative to the characters; instead of a caricature of the character roaming around miniature terrain, as found in the earlier Final Fantasy games, every area is represented proportionally. The player navigates the world on foot or by chocobo, large flightless birds that appear regularly in the Final Fantasy series. The game world is divided into multiple regions and time periods. The player can visit a region in multiple time periods and multiple regions at the same time period. For example, the region of Oerba can be reached in the years 200 and 400 AF, while the Sunleth Waterscape and Augusta Tower regions can be visited in the year 300 AF. Some regions, because of plot points within the game, have alternate versions of themselves; for example, two versions of the Academia region in the same year can be accessed once the plot has made the second version available. Connecting all these regions is the Historia Crux, which the player can access at will. The game's regions are represented as a branching path instead of being accessed linearly. New regions can be unlocked via plot points or by acquiring optional special items and the player may transfer between unlocked regions at any point.[4]