Of these, six were previously released by alternative means on the Game Boy Advance: Upon launch of the series in Japan, 1 million units were sold within eight days.
[5] Some reviewers were annoyed that the Classic NES Series versions of some games differed slightly from the originals.
For example, Craig Harris of IGN complained that the Classic NES Series version of Xevious had an automatic firing setting that made it less difficult than the original.
[7][8] In Super Mario Bros., the screen ratio aspect was altered, causing odd graphical artifacts.
[8][11] Both GameSpot and IGN noted that Nintendo had given away The Legend of Zelda and Zelda II: The Adventure of Link for free in the Collector's Edition bonus disc, although they conceded that the Classic NES Series version was portable.