Dark Souls – The Board Game is a miniature-based exploration board game created by Steamforged Games. It was released in April 2017 and is based on the Dark Souls video game series by FromSoftware and Bandai Namco Entertainment. A successful crowdfunding campaign raised over £3.7 million to fund the development of the project. (taken from http://en.wikipedia.org/wiki/Dark_Souls_%E2%80%93_The_Board_Game)
Darkroot is the final resting place of Artorias, a deadly revenant and relentless swordsman who is guarded eternally by his companion, the Great Grey Wolf Sif. The Darkroot Expansion is intended for use with Dark Souls™: The Board Game. New Dark Souls™: The Board Game adventures await in the Darkroot Expansion, with new enemies, new encounter cards utilising those enemies, and new treasure cards for characters to discover along their adventures. (taken from https://boardgamegeek.com/boardgame/199527/dark-souls-board-game-darkroot-expansion)