During the period Eternity was publishing the title, the company published several "NHS" limited series and spin-offs, including a "Ninja High School: Special Edition" (re-releasing the original mini-series with new art, reprinting "part four" of the graphic novel as issue #3.5, and reprinting issue #4), "Ninja High School in Color" (1992–1993), and a two-issue intercompany crossover with NOW Comics' "Speed Racer" in 1993. When Eternity shut down, Antarctic Press took over publication of "NHS" starting with an issue #0 in May 1994. Resuming the numbering with issue #40, Antarctic published 137 issues, ending with issue #175 in August 2009. Story continuity was "reset" three times, between issues #57 and #58, issues #74 and #75, and issues #129 and #130.