The finished product was marketed as " UFO : Enemy Unknown " in North America and as " X-COM : UFO Defense " in Europe and Australia .
The finished product was marketed in North America as " UFO : Enemy Unknown " and in Europe and Australia as " X - COM : UFO Defense " .
The finished product was marketed in North America as " UFO : Enemy Unknown " and in Europe and Australia as " X - COM : UFO Defense " .
Reformular este texto: The finished product was marketed as " UFO : Enemy Unknown " in North America and as " X-COM : UFO Defense " in Europe and Australia . Producción: