Seriously, do I need to spell out the games name?
game #15
Hint 1: Combine materials gained from slaying monsters to get magical stones.
Hint 2: It's a spinoff of a long-running series (that started in the 80s).
Hint 3: As you fulfill quests the tavern gets emptied.
Hint 4: Deep in the labyrinth is a ... waterfall?
Hint 5: What the hell happened in this Forsaken Land?
Hint 6: What Wizardry did you put in this tale by taking away your memory?
Hint 7: This PS2-game was published by a japanese company well-known for their RPGs, although the series it is a spinoff from is a western RPG.
Hint 8: Cast spells like Kreta, Zateal, Daiba and many more.