Gregarious Simulation Systems elevated the MMO concept to an entirely new level. The OASIS didn’t limit its users to just one planet, or even a dozen. The OASIS contained hundreds (and eventually thousands) of high-resolution 3-D worlds for people to explore, and each one was beautifully rendered in meticulous graphical detail, right down to bugs and blades of grass, wind and weather patterns. Users could circumnavigate each of these planets and never see the same terrain twice. Even in its first primitive incarnation, the scope of the simulation was staggering.