Divinity: Original Sin

   I liked everything in this game, from the graphics and soundtrack to the way the world is designed and game mechanics. On "hard" (the maximum) it is not difficult and neither well balanced; if you do all the quests you'll be ahead of your enemies most of the time with 1-2 levels and if your party is well made you won't have any real use for potions, special arrows or scrolls. You can make the game more challenging by not using any guides which might get pretty frustrating at times as some the puzzles are a bit counter-intuitive, you don't have a clear list of things that you need to do, and you don't have a clear crafting list (you just read books and you're supposed to remember the combinations/recipes or at least the books that was in to read it again). The game does not hold your hand which is pretty cool but it can also lead to frustration.

UPDATE:

   "Divinity: Original Sin Enhanced Edition" was announced and it's supposed to come with a ton of improvements, so I suggest you wait for it. Unfortunately the game might not get to be more challenging according to the devs.

"There are many changes in the storyline including hours of extra end-game content.  We’ve recorded voiceovers for each and every NPC dialog, added new quests and situations, and added new characters and game modes. And that’s not all; there are lots of new features that we will be talking about in the coming months!"