Kalarion
Serial Ratist
The maps are restrictive, not open
Not true. Other than the gating mentioned below, you can wander around and stick your nose in far-too dangerous caves almost right away.
and there is no order of exploration
Also completely untrue. Until you unlock certain events in the game, entire sections are unreachable. They're gated and thus the order in which you explore the game determines whether or not you advance.
Thus, exploration is its main characteristic.
One loot cave per region with mildly difficult encounters does not an exploration game make. And it is not "almost right away", you get access to each cave at the same time you get access to their respective regions. That's not a sense of exploration, it's an ornament tacked on each region to make lawnmowing the map less of a chore.
You're correct about my second statement, I misspoke. There is no exploration, period, as you so helpfully demonstrate:
Until you unlock certain events in the game, entire sections are unreachable. They're gated...
So my saying there is no "order of exploration" is nonsensical. I will edit my post.