I don't know if it has a name, I saw this world where I can place my own lots on edit town mode, but it is something like this (this is a alien world and I don't want alien worlds). I was looking for a world like sims 2 neighborhood (where you can put your own lot sizes without unroutable issues). BUT I can’t put all lots in one world because the lot sizes changes and whenever I try to remove the lots and put new lots with the new sizes (of my lots) the game has that annoying problem of unroutable terrain and I can’t put the new lots ): To make long history short I was trying to make sims 1 neighborhood on sims 3, I made all residential lots from base game, unleashed and livin’ large on a small world (a build world). I'm looking for this for ages now, so I think this could be some help (my last hope actually).