The correct romanization of the title with the furigana "プロジェクト" is Project Zeorymer.
An alternative title is "Meiou Project Zeorymer", read on Japanese VHS and Blu-ray:
http://www.suruga-ya.jp/database/pic.../952006935.jpg
http://www.suruga-ya.jp/database/pic.../428000093.jpg
For the products represented, I put the English name of the OVA "Hades Project Zeorymer", then in brackets the Japanese name.
Also is it written somewhere that Eiji Kawamura performed the BGM tracks? It is not mentioned on the back jacket.