Path of Exile
Path of Exile is hands down my favorite game of all time. Although I don't play games as much as I used to, I always set aside a weekend for every new expansion that comes out every three or so months. It is a true spiritual successor to Diablo 2 with its gothic colors and atmosphere in addition to its extreme difficulty and character diversity. The developers are very responsive to player feedback on their forums and subreddit, but they selectively ignore feedback that violate their core philosophies of a fun, authentic ARPG experience.