Crosshair is an Asteroids-inspired game developed as an extension of a school project. I made it for practice in a couple areas of game design. One was using physics for the game mechanics -- this was back before rigid body physics became a standard component in game engines like Unity and Unreal. Other areas of interest were visual aesthetics, sequencing music in Rebirth (which emulates a Roland TR-808), and cross-platform app porting (Linux, Windows, MacOS).
The original Asteroids has a two-note bass loop that accelerates as the game gets harder. I wanted to start with that idea and then build to an acid techno sound. The sequencing is rough but I was happy being able to sketch that progression.