1) Digital collectible card game 2) Esports game 3) Fireplace part, sometimes 4) Home, metaphorically 5) IOS game 6) Multiplayer online game 7) Stone 8) Windows game Found on https://www.crosswordclues.com/clue/hearthstone
Hearth'stone` (-stōn`) noun Stone forming the hearth; hence, the fireside; home. « Chords of memory, stretching from every battlefield and patriot grave to every living heart and hearthstone .» A. Lincoln. Found on http://www.encyclo.co.uk/webster/H/23