Dragon Age: Inquisition in my opinion. There's a lot to do, it's fun, easy to understand the mechanics, and looks really nice. I'd take away some points due to some problems with navigating (trying to jump up dwarven ruins and their hexagonal stones) and some choppy character animations. The story may be a little confusing to new comers, but they do a decent job of summing the basic things up. Sunset Overdrive would be a close second choice for me. But I've sunk more hours into DA:I and it's multiplatform so it can reach a wider audience.