While the Japanese Manga/Anime of Crayon Shin-Chan debuted way back in 1990 over in Japan, it didn’t get popular in the West until around 2006 when Funimation picked up the license. Even though it took us decades in America, the show still became a cult hit and its not surprising seeing previous Japanese only releases like Crayon Shin-Chan Showdown! Quantum Panic!! on the SEGA Game Gear getting fan translations.
According to Psyklax, the translator for this project, every piece of text has been translated outside of a few Japanese signs that don’t matter. Check out the translation over at Romhacking.net.