Good evening, and welcome to Name That Game, Apple IIGS* Edition!
Up first: A top-down tile-based RPG with simplistic combat (walk into enemies), a rudimentary shop system (stand on shop tile, purchase equipment [and possibly items]), and that old standby, the boat.
As stated, most of the combat involved walking into enemies. The boat, however, could fire a projectile in any of the cardinal directions. Of the shareware 'module', the most common enemies were skeletons and spiders; others existed, though they do not spring to mind. Traps were a major obstacle, invisible blocks could block progress, and some doors may have required keys. Chests may have dropped from enemies in addition to being placed in the world.
The game did not feature scrolling of the active area. The tiles were very basic. I do not recall if enemies respawned upon leaving and re-entering an area, though I have faint memories of farming the first group of skeletons; this may simply be because I played it so much.
Each shop had a separate tile. More expensive weapons and armor were simply better.
There was a HUD of some sort, at the bottom of the screen; though what it showed is beyond me: gold, perhaps? Possibly a list of commands that were usable: pressing 'F' to fire the projectile (assuming that's the correct key) would first update this with a "choose a direction". Unless my memory is lying to me.
In the spoiler, we have a loose interpretation of the first two screens of the game. It's as correct as my memory allows:
The colors are randomly chosen in this example.
The black simply denotes a given area (board? section?); the yellow is a hut with a [in light-blue] door; the dimensions are a guess, but it contains skeletons. And possibly a staircase heading down. The blue is river, and the gray are mountains. The reddish-brown are shops. Armor and weapons, certainly, and most likely items.
It was definitely not Explorer/GS (though, if you were guessing that, kudos
), as that game included classes, magic, and a host of other things, including much more complex tiles.
* I am nearly positive it was a IIGS game, but lack any evidence** to support that claim. It could easily be DOS; certainly no later.
** given the amount of evidence I have, I may have invented the thing out of whole cloth in a fever dream.