Nemesis '94 is an unofficial remake made by a Gradius fan. This version is more faithful to the original with only updated graphics and music.
Report a problem or an outdated installer
Report any problem you might encounter with the installer. You can
also report here outdated installers. If you have problems
installing or running the game, don't forget to specify your
distribution, (+ version and architecture), your graphics chipset
model and the driver used.