Even as Konami was getting cheekily political on NES and in arcades with their audaciously titled "Contra," Sega cautiously dodges controversy by meekly retitling S.D.I.: Strategic Defense Initiative as "Global Defense" for Master System. Nice try, guys, but we all know the truth. Meanwhile, Zaxxon 3-D probably SHOULD have been given a different name, since it plays more like Zoom 909 with a few Zaxxon-esque embellishments.