Well, I don't know if the game is popular here, but it's not-so-popular in other communities (as far as I know).
The title is [Riviera: The Promised Land], it's a wonderswan game, remade into GBA, and then re-remade into PSP version.
It's an RPG that focus on item management. You can only have 15 (if im not wrong) items in your inventory, and only 4 items into battle. It's impossible to attack without any item, and each item has its own number of uses before it breaks. Seriously, I had a hard time managing my inventory.
But what's interesting about it is, like VN, you have choices, and although it rarely affects the in-game story, it affects the 'love points' of your teamates, and will result in different ending. It's harem, by the way.
Great game, definitely one of the best I've played in my life.