I said the map isn't big, but that don't deny it's a open world game...Sandbox ? Well, Yes ? A small open world ? That's what i said lol.Hmmm... Not sure about this. I absolutely love Yakuza (second favorite game series after Resident Evil), but it's not really open "world," it's more like an open... sandbox. And a very small one at that. The level of interactivity with NPCs and objects/buildings is practically non existent. You only get 3 discrete times during the day -- morning, evening, and night. No weather changes (I think in some of the games it does rain).
That is to say, I love Yakuza and all the side activities to do (SEGA arcade, bowling, karaoke, eating, etc etc...) And of course the playable characters and secondary characters are better than the GTA crew...