Tainted Grail The Fall of Avalon is an action-packed adventure RPG developed by Questline that takes place in a dark and dangerous world inspired by Arthurian legend. The game features an immersive storyline with multiple branching paths and choices that significantly impact the outcome of the game. In Tainted Grail, players take on the role of a group of heroes on a quest to save the land from an ancient evil that threatens to destroy everything. The game offers a range of character classes and skill trees to choose from, allowing for customizable playstyles.