=========================================================================== $NetBSD: MESSAGE,v 1.1 2018/12/23 15:05:52 nia Exp $ To start the NXEngine core, you need to obtain NXEngine's data files. You can do this by going to RetroArch's main menu screen and selecting 'Online Updater'. From there, select 'Content Downloader', then 'NXEngine'. After downloading Cave Story, go back to RetroArch's main menu screen. Select 'Load Content', then 'Downloads', then 'Doukutsu.exe'. ===========================================================================