Well, the NES format is a FC game, then Brave Dragon 6 is actually Brave Dragon 3 the beginning of the legend of the alien technology Chinese version, about the DQ series of questions suggest that you go to the Sky Fantasy's Brave Dragon topic look at the topic of DQ3: dq3.ffsky.cn
Also suggest that you play SFC's DQ3, the Chinese version of that is very good, and the effect is much better than on the FC!