Remnant puts you in a first-person, in-the-cockpit view, looking out of a transparent window into space. You're presented with a crosshair in the middile of the screen, which is the indicator of where you're firing (a-la Star Raiders.) When an enemy appears on the screen, the goal is to match up the crosshair with the UFO or asteroid and shoot it. Kill a set number of UFOs, and you're off on your next -- more difficult -- mission. Subsequent stages pit you against multiple simultaneous enemies and hordes of stray meteors which must be either dodged or shot down.