I predict at least 3 mil maybe upwards of 5.
I'd love to play the original after hearing so many great things about, but it's just too dated for me at this point. I could probably get past the graphics, but the absence of any significant sound effects is a killer for me.
Ahh, that's a pretty weak excuse in my book. However, I reckon a solution might be DOSbox with a background playlist full of fallout oriented ambient music…would work for me.