From Creatures Wikia
VectorWorlds was a privately owned ActiveWorlds universe that offered free accounts and free worlds. As ActiveWorlds started to die, VectorWorlds began to require payment for new accounts. Eventually, VectorWorlds shut down as well. R0bin had obtained a world on VectorWorlds called Tiburon so Lis Morris could rebuild the old ActiveWorld there. VectorWorlds was shut down before she visited.