My Steam library is severely lacking in RPG games. Actually, I cannot recall owning a single true RPG on Steam. I assume that there is a significant number that I just can't seem to find. So I ask you this: What is your favorite Steam RPG? It would be preferred that you state some main features of the game, the approximate length of completing the storyline, and other various components that you find relevant. I hope to see some good games here that I can add to my library.  

Bastion may be considered an RPG of sorts.  The narration in that game is top notch, and really sets the tone of the game.  It's one of many recent additions to video games that prove they can be art of high quality.  I've been wanting to get Transistor for a while, but it hasn't nearly been discounted enough to justify a purchase...plus my funds are very low right now.

Well, here is what I have in mind:

A- Fate: This game is like a diablo where the story is too simple, the dungeon is SUPPOSED to be randomized (or maybe it was on purpose) instead...it just reset so that the enemies respawn.
Now, the gameplay is what I like about this game but first your pet, your pet can morph into different kinds of monster when you feed it a fish, also even if its HP went to zero...it only runs around for a while then recovers.
And be careful about the enemies, sometimes they use high-level spells before you even get the chance to play it, and sometimes but rarely....enemies use ARTIFACT weapons against you! Which almost killed me despite the fact that the enemy was a low level and weak, I even saw an undead wielding a HOLY WEAPON (which deals more damage to undead).
How long will it take? Hmmm, maybe 70 hours or less.

B- Paper Sorcerer: Although this game is quite buggy, it has some cool features, a somewhat nice story that takes 20+ hour to complete, the combat is great and seems to depend more on characters and the skill you use than just level up. And all this for 5$.

C- Rogue Legacy: A nice action/RPG game to add to the list, it has a good story (kinda) and a nice amount of replay value. Also it has a lot of classes but sadly the difference is only small....and the most important aspect is that your character features are totally randomized, so you can get a small hero that is hard to hit, or you could get yourself a blind giant that is clumsy. How long is this game? Well, maybe it is about 16 hour of gameplay.