Conquest is a real-time, multi-player space warfare game that was originally written in RATFOR for the VAX/VMS platform by Jef Poskanzer and Craig Leres in 1982. It was the early predecessor to Netrek.
Optional music pack. Unpack this tarball in your ~/.conquest/ directory and you will have some great Star Trek music to go along with the effects. This works with all versions as of 8.3+.