Nobody on the team making Fellowship would deny that World of Warcraft was a massive inspiration for the game—I know, because I've asked them about it. It's not just the art style, but the entire pitch for the game is what would happen if a popular activity in WoW was an entire game.
What impresses me the most is how distinct it feels despite the obvious similarities. Fellowship has a little more MOBA DNA than an MMO, which means its heroes have far fewer abilities and gear options than classes in WoW. This works in its favor because the game isn't about a long grind, but rather a repeatable co-op dungeon experience with queue times and matches.
