'Gungnir', released in 2011 in Japan and 2012 in North America, is a tactical role-playing game developed by Sting for the PlayStation Portable (PSP). Players engage in turn-based battles on grid-based maps using characters with unique abilities. The story is set in a fantasy realm where class struggle and war are central themes, with the game's narrative garnering praise for its depth and complexity. 'Gungnir' features Sting's signature gameplay mechanics and is part of the Dept. Heaven series, though it stands independently in terms of storyline.