SpaceSimCentral

Sound like something from the Lord of the ring, in fact I think their is a 8 or 16 bit game called that. Anyhow came across this YouTube vid of the game and it looks like a variation on star raiders, came out in 1989 on the Spectrum, Amstrad, C64 and Atari ST, looks like the Amiga version was canned. if you want to have a go yourself then you can track down the Spectrum version here. [url]http://www.worldofspectrum.org/[/url]

it appears this game is generally considered public domain
you can try it in an embedded amiga emulator on archive.org or download it

Wayback Machine - Ring Wars

nice find