Phantasy Star for Master System on Sega Mega Drive
At a certain point I just gave up and looked for maps and walkthroughs, I got lost even on the overworld because the goddamn casual encounters didn't let me get a good enough idea of my surroundings, and a few things are literal guide dang it moments, like where you can use the hovercraft on Motavia, the small tract of coast in which you can use it is no different from the rest but you have to go in that precise spot even though on Palma as long as you are near water you can use the damn thing.
Casual encounters are often infuriating, either you can go through entire dungeon floors without a single encounter of you get one for each step you make which is made more aggravating in the late game by the fact that they tend to have bazillions of HPs and some even long attack animations like the Zombies.
It's still much better than the DS version of Final Fantasy III, but not by much, at least you don't have to grind that much, I just had to farm some money and on Motavia there are enemies that drop them by the truckload and I don't remember the last time I had one of my characters die.
I should be more on less near the end, I should be able to finish it in a day or two.