It's very quirky but excellent, huge, yes I'pose you'd call it RPG, masses of monsters & demons to do battle with, I played the last one on PS2, another PS2 game I liked a lot was The Bard's tale [2005] official US Playstation magazine gave it 90%, one of their highest %'s
Earn enough in battles & you can hire a boat, landing near castles, enter, & fight hordes of different monsters, if you defeat all them, then the owner of the castle, you get loads of cash & advance through the ranks, ultimately to Knight, all ranks are on a horse, if you haven't played it, do so, it's a must not sure if it's on PC