Kairon: It has similarities to an MMORPG. There's mobs that are aggressive, neutral or scared, there's trees with fruit that respawns over time, there's loot from enemies that can be used in crafting for big money, ...
I think I should mention some annoyances about the mapping system:
Basically, when you're new in an area you can find a dude who will sell you a map. That map only contains topology, no landmarks. When you find a landmark (e.g. a statue) you can add it to the map. For that oyu have to go into the mapping menu and draw a circle around the landmark. If you draw it right the landmark appears, if you're slightly off the circle turns yellow and you get a nearby miss noise, if you're completely off the circle turns blue and you get a miss noise. For one thing the circle isn't considered closed when it looks like that, just when the line you drew intersects itself but the drawn line appears quite large while the intersection is checked only at the center. Quite easy to have a circle not register. Also you have to circle the position the landmark will appear in on your map, not where it's physically located. Often that's the same spot but for some it can be off, resulting in a blue circle if you circle the landmark and making you think that mark is not meant to be mapped. For each mapped landmark you get some money when you show it to the cartographer (a relatively small amount, it's not a major income source), once you mapped all landmarks you will automatically sell the map which means you can no longer see it (you'd think Tingle would copy it before giving it away). You can rebuy the map but that costs more than you got for the sale (considering you sold the master and buy a copy you SHOULD come out ahead but apparently Nintendo disagrees). So once you mapped all landmarks of an area you'll have to pay a bit of money back to keep the map (or you can just ignore the lack of the map for now).
BTW, if you tap a landmark items or rupees may pop out.
What needs to be mentioned as well is the save system: You can only save when you're in Tingle's home. When you're above ground that's not a problem, you can use Tingle's balloon to fly back home but you'd have to exit a dungeon to get there and save. This may be problematic if you're playing on the go, especially since there can be situations that prevent you from leaving the dungeon. There's a teleport item that gets you out of a dungeon immediately but that only works at designated spots in the dungeon.
Oh and after seeing the lonlons I don't think I'll want to use lonlon milk in a Zelda game ever again. Apparently their hearts are pretty good for cooking, though.