In E.T.I., players become directors of powerful mega-corporations in the early 1960's with the goal of defending the Earth from a pending alien invasion! Players compete to discover increasingly advanced technologies from eight different fields of science and technology. Completing projects increases the power and influence of your lab facility. After a pre-determined number of technologies have been discovered, one of the players will reveal themselves as allied with the aliens! With this the invasion is near! The remaining humans labs must use their fantastic discoveries in Earth's final defense! Will one of the human facilities have the strength to repel the aliens or will the Earth fall? It is in your hands...