Radiant Historia is a role-playing video game co-developed by Atlus and Headlock for the Nintendo DS.

The game is set on Vainqueur, a continent divided between the warring nations of Alistel and Granorg. Alistel soldier Stocke is chosen to wield the White Chronicle, a tome capable of navigating multiple timelines, so he may prevent Vainqueur's desertification. Stocke and his party explore Vainqueur, fighting enemies on a grid-based battlefield using a turn-based system. Travelling between alternate timelines is a key part of both the storyline and the gameplay, with the number of potential timelines unlocked influencing the ending.