The lack of a patch is not due to a lack of interest, but rather significant technical barriers:
Since a direct patch doesn't exist, players typically use and translation tools to progress: evangelion jo psp english patch top
Furthermore, if you enjoy this, the top translation team also worked on the sequels: Evangelion: Ha (2.0) and Evangelion: Q (3.0). Those patches exist, but Jo remains the most stable and complete. The lack of a patch is not due
In Neon Genesis Evangelion: Jo, players take control of Shinji as he navigates through various levels, fighting against giant monsters known as Angels. The gameplay is a mix of side-scrolling action and exploration, with an emphasis on strategy and quick reflexes. As Shinji, players must manage his mental and physical health, as well as his relationships with his peers, including Rei Ayanami, Asuka Langley Soryu, and Misato Katsuragi. The gameplay is a mix of side-scrolling action
You need the original Japanese game. Look for the file named Evangelion_Jo_JPN_PSP-Caravan or similar. The file size should be approximately 1.2 GB. Do not use a pre-patched ROM from shady sites; they often have malware.
Neon Genesis Evangelion: Jo (often referred to simply as Evangelion Jo ) is a 2009 action game released exclusively in Japan for the PlayStation Portable. It serves as a retelling of the first half of the Rebuild of Evangelion film series. Despite the massive global popularity of the Evangelion franchise, an official English localization was never produced. This has led to a significant demand within the Western fanbase for an unofficial English translation patch. This paper examines the current status of such projects, the technical hurdles involved, and the realities of the fan translation scene regarding this title.