Tales of Zestiria is the 15th title in the main Tales timeline, and my sixth in the franchise. While the 2015 Japanese role-playing game follows many of the same tropes as others in the line, it differs in key areas of gameplay. The title also garnered a two-cours anime series, Tales of Zestiria the X, that loosely followed the same events (read my review here) as the original. Avoid the anime if you are at all interested in playing Tales of Zestiria, or even its prequel, Tales of Berseria. Enough of the same events are presented in Zestiria the X to spoil some of the more dramatic scenes in either game.
Anime B&B 