I’m honestly still unclear if the game is supposed to be an mmo (like most isekai) or a single player rpg. I know Tyrant of Tower Defense is based off a single player tower defense rogue-like, and Infinite Gacha is… a multiversal gacha game, and Isekai Nightmare is a 4x strategy game.
I think Paradiso is more like a Bethesda RPG because of the based building and all the NPCs having set stories with what seem like later DLC/expansions added to the game.