Gameshop's second edition of the game fixed the printing error on page 185 and added "PAT. PEND." below the copyright notice on the rear of the title page. Also, the shooting effects were altered to make them more obvious. The charts may have been different from the earlier edition (the errata must be different), but so far this remains unknown, since this version is so rarely seen.
As far as is known, in all other respects, it is the same as the earlier Gameshop edition: for example, the title page states "Gameshop Inc."