Complex sentence: IGN described the series as neglected by Nintendo in North America, as "Mother 1", its "Mother 1 + 2" Game Boy Advance compilation, and "Mother 3" never left Japan.
Split into simpler sentences: IGN described the series as neglected by Nintendo in North America. The original "Mother 1" was not released overseas, and neither the Game Boy Advance "Mother 1 + 2" compilation nor "Mother 3" ever left Japan.