Valkyria Chronicles, known in Japan as Battlefield Valkyria: Gallian Chronicles (戦場のヴァルキュリア -Gallian Chronicles-, Senjō no Varukyuria -Gallian Chronicles-?), is a tactical role-playing game published by Sega exclusively for the PlayStation 3 and was developed by Sega WOW's Overworks division. It was released in Japan on April 24, 2008. A European version was then released on October 31, 2008 before a North American version was released on November 4, 2008.

The game is set in Europa, a fictional version of Europe, in 1935. Because of its abundance of ragnite ore, which can be refined into a powerful fuel, the neutral nation of Gallia comes under attack from the East Europan Imperial Alliance, which is itself engaged in a war with the Atlantic Federation. Players take control of an uprising of Gallian nationals, dedicated to repelling the invasion. The game's visuals, which feature SEGA's CANVAS graphics engine, have received a lot of attention - with CANVAS, the game's entire graphical style is built to resemble a watercolor painting in motion.

Source: Wikipedia