I haven't finished it but I started playing Sable for a bit. There's no attack mechanics at all and it's fun to explore. The art style is also very nice to look at IMO.
I'll second the vote for Sable. No violence. A youth on a journey, with unique graphics (debugged since the initial release). A story to uncover. Not the largest open world, and it'll take 20+ hours if you complete all the tasks. Steam.
