Diablo is described as «action RPG series that takes place throughout the dark fantasy world of Sanctuary. You play a hero who engages in fast-paced combat that tests your reflexes and rewards tactical decisions» and is a popular role-playing game in the games category. There are more than 50 games similar to Diablo for a variety of platforms, including Windows, Mac, Linux, Steam and Android. The best alternative is Path of Exile, which is free. Other Diablo like games are Torchlight, Grim Dawn, Titan Quest and Sacred.Diablo alternatives are mainly Role-playing Games but may also be Action RPG Games or MMORPG Games. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Diablo.
