Based on Nintendo licensed characters. There are two series. Both series identify as Volume 1 in indicia. The first run is $1.95 each, undated covers (May 1990 through September 1990). These are listed in series
http://www.comics.org/series/16511/ Link: The Legend of Zelda (Acclaim / Valiant, 1990 Series).
A reprint run started nine months later. Each is $1.50, with months on the covers (February 1991 through June 1991). The second run reverses the covers used on issues 2 and 4. Contents of issues are also different, with some stories being printed in different issues or omitted. These are listed in series
http://www.comics.org/series/39934/ The Legend of Zelda (Acclaim / Valiant, 1990 Series).
A sixth issue was planned for the second run and mentioned in the letters page of #5, but not produced. The content may have been repurposed for Nintendo Comics System (Acclaim / Valiant, 1991 Series) #7, which contains stories named as being in the sixth issue.
ISSN 1049-1481.