As with most other major film and animation releases in Japan, a wide array of promotional merchandise was marketed before and during the OVA's release, including Nissin Cup Noodles with lead character Takeru printed on the lid, small desktop figurines, a limited Nissin Cup Noodle container and badges designed by video rental outlet Tsutaya that came free with the purchase of Freedom 1, among tie-ins with other retailers.
A life-sized version of Takeru's tri-cycle vehicle was specially designed for the launch of Freedom Project and was on display during the 2006 Tokyo International Film Festival.
A life-sized promotional cardboard cutout figure of Takeru illustrated by Otomo Katsuhiro was auctioned on Yahoo! Japan and fetched a high price.
The Apollo 18 patch on Takeru's suit bears the astronauts' names "Lee, Lifeson, Peart". Geddy Lee, Alex Lifeson, and Neil Peart are the three members of the Canadian rock band Rush.
The architecture of Eden's domed city bears numerous similarities to the designs of mid-20th-Century architects Eero Saarinen, William Pereira and Minoru Yamasaki.