The three times improved (remake of a remake) turn-based open-(under)world RPG Avernum is out on Win and iPad.
I can very much recommend it. It's full of RPG goodness, lots of quests, dungeons and pretty much open world done right.
The only slightly negative aspect is that you have to focus your skills - each character has to focus on melee, or missiles, or offense magic or defense magic. Mixing punishes you by being weaker.
Buy it directly from the author
Or cheaper on Steam and Appstore.
There is also a very sizeable demo (as long as some new games nowadays).
Has anyone already played it? What are your thoughts?