The player directly controls the 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, which allows for a 360° view of the surroundings.[5] The world of Final Fantasy XIII is rendered to scale relative to the characters in it; instead of a caricature of the character roaming around miniature terrain, as found in earlier Final Fantasy games, every area is represented proportionally. The player navigates the world by foot or by chocobo.[6] Players may save their game to a hard disk drive using save stations, where the player can also purchase items from retail networks or upgrade their weapons.[7] An in-game datalog provides a bestiary and incidental information about the world of Final Fantasy XIII.[8] The Final Fantasy XIII Ultimate Hits International version of the game, released in Japan, also contains an "Easy" mode option.