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 -Garian Kuronikuruzu-), is a tactical role-playing game developed and published by Sega for the PlayStation 3. The game was released in 2008.
The game is set in Europa, a fictional version of World War II 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 a militia squad of Gallian nationals, dedicated to repelling the invasion. The game's visuals, which use Sega's CANVAS graphics engine, resemble a watercolor painting in motion.
Valkyria Chronicles received universally high scores, and earned numerous awards from several notable video game publications. The success of the game spawned multiple manga titles and a televised anime series, as well as a sequel, Valkyria Chronicles II, which was released for the PlayStation Portable in 2010.
Source: Wikipedia, "Valkyria Chronicles", available under the CC-BY-SA License.