Putting together a list of top role-playing games that fuse real-time action with RPG elements on the pc was quite a tall order, since there have been some great games that have hit the platform. Choices were made based on a number of different criteria, including writing quality, storytelling, player choices, and game mechanics. Every action RPG fan should play these games.
#13 Din's Curse
By the same people who made the game above (Soldak Entertainment Inc.) comes Din's Curse, which is a bit more standard fare than the covenant juggling Depths of Peril, but still has a randomization coming out the nose, as well as mobs that can grow uncontrollably strong and attack the town if not taken care of.
#12 Depths of Peril
A more niche game than pretty much all of the above, Depths of Peril is an interesting randomized ARPG with MMO elements in which there's a level of depth added where you are part of one of multiple covenants in the starting town. You can trade, ally, raid or destabilize the competitors while always being at risk yourself.
#11 Divine Divinity
Looking a lot like Diablo 2, having most of the same technology behind it, DD is a classic fantasy tale with a huge story and world to delve into. There's a lot in this game from all aspects, but it's from the same era as Diablo 2, so you may want to pass on it from this reason.
Made by Travis Baldtree, now part of Runic Games of Torchlight fame, Fate is very much a Diablo 2 clone that is entirely 3D. With charming graphics and the pet that's now a usual sight in the Torchlight games, Fate is still a game you might want to try out to see the branching paths of the ARPG from one of the threads that fate weaves.
An extremely tongue-in-cheek title that handles just as well as any other action-RPG, DeathSpank is a satirical game that tries to exude funny out of every pore and manages to do so... mostly. Thongs and bacon and whatnot.
If you took Diablo and placed it next to Oblivion expecting them to have cute demonic offspring, Sacred would probably be the offspring - a sprawling map that seemingly never ends and a colourful presentation from an isometric perspective are set before you. Keep focused or you'll be lost in all of the sidequests.
#7 Dark Souls
While it's not as much a lootfest as the other entries on this list, Dark Souls is an extremely atmospheric game that throws you into an unforgiving world that makes you fight for every step you take. Very difficult, but fair throughout.