Tales of Xillia (Japanese: テイルズ オブ エクシリア Hepburn: Teiruzu Obu Ekushiria?) is a Japanese role-playing game for the PlayStation 3. It is the thirteenth core product of the Tales series and is developed by Namco Tales Studio with Namco Bandai Games as the publisher. The game was released in Japan on September 7, 2011 and was localized in North America and PAL region in August 2013. The game takes place in a fictional world called Rieze Maxia where humans and ethereal spirits live in harmony. It follows Jude Mathis and Milla Maxwell who elude government officials after sabotaging a weapon of mass destruction known as the Lance of Kresnik. The plot's central theme is Yuruginaki shinnen no RPG (揺るぎなき信念のRPG?, lit. "RPG of Unwavering Convictions").
Tales of Xillia's reception in Japan was highly positive. At the time of its release, it was the most preordered Tales game in the series and sold half a million copies in a week; the game also won awards from Sony and Famitsu. The English localization received positive reception for its battle system, neutral to positive reviews for its plot and characters, and criticism for the map designs. The sequel, Tales of Xillia 2, was released in November 2012 in Japan and in August 2014 in North America and PAL region.
Tales of Xillia consists primarily of two major areas: the field map and a battle screen. The field map is a realistically scaled 3D environment traversed by foot. On the field maps, various skits between the characters can be viewed. They involve animated character portraits, subtitles, and full voice acting. Skits concern anything from character development to side details. The battle screen is a 3D representation of an area, in which the player commands the characters in battles against CPU-controlled enemies.
During battle sequences, the game uses the Dual Raid Linear Motion Battle System. The top four characters are chosen to battle and characters not controlled by a player are controlled by artificial intelligence with instructions set by the players beforehand. The "Assault Counter" (AC) denotes the number of skills and actions a character can perform. Usage brings the AC down and is recharged over time. Skill usage costs "Technical Points" (TP) which can be refilled by attacking or using items. During battle, characters can link to each other to perform unified attacks.