Please use the following steps to get your English Cave Story game working on the RetroPie. Please remember to backup EVERYTHING that you are not willing to lose (screenshots, roms, saves, save states, artwork, etc).
- Install lr-nxengine
- Download and extract my current Cave Story setup files here: https://www.iruberleet.org/files/retropie/ports-cavestory.7z
- Place these files on your RetroPie in the following location: ~/RetroPie/ports/
- Try out Cave Story under the Ports category in Emulation Station with the English translation now applied.