Digimon World 2. That game only has the grind. There is nothing else. No plot worth mentioning, no engaging characters, troutty non-involved dungeons, sub-par graphics, and it's only redeeming quality being a pretty decent battle system.

The only way you can play this game is if your are a massive grind whore like I can be, though even then you it's horrid.

Still enjoy it though.