I saw this video mentioned on Kotaku this morning. Owen Dennis, the guy who found the video, said “This is gameplay footage from the original game ‘Starcraft’ as it was released in 1984. My uncle worked as an assistant programmer for Blizzard/Activision in the early 80’s. I found this in his closet next to an old Colecovision.”
Well then, I guess this is actually footage as well. Regardless, Owen did do a good job on it and it deserves viewing.