Shadowrun Returns is a good option, since it is a rather tight RPG you can play through at a good pace, and then, if you liked it enough, move on to Dragonfall or leave that be for a while. A tight experience with the option to expand at the end if you like.
Wolf Among Us is one of the better Telltale Games. As a Telltale game you won't find any hurdle as you may encounter in traditional point & click adventure games, where one of the puzzles may just not occur to you, or you just always miss the one hidden spot you were supposed to click.
Stygian is a fantastic RPG. Sadly the devs didn't have the money to make it as long as it should be, so the story ends abruptly. Still one of the best RPGs of recent years, with so much potential. As it stands, it isn't too long.