Talk-Polywell.org

I found that Elon likes Kerbal Space Program from that AMA. Of course, most of us KSP players consider him to be playing Human Space Program.

South Africa - USA in the real world space programs leading edge

Brazil - Mexico in the virtual world space programs leading edge (Kerbal was thought, proposed, designed and programmed by a brazilian guy working for a Mexican digital marketing company (Squad), but his bosses have the credit of hearing his crazy idea for a game and believing and investing on it. There is a cool interview with Felipe Falanghe where he tells how his idea for Kerbal came from his childhood homemade rockets experiments near São Paulo, and that he is lucky he never lost a limb)