Continuum

Continuum is a very long running massively multiplayer online game which has existed in various forms since 1995! It is a rather addictive multiplayer game with some cool-looking retro graphics, which reminds me a lot of Terraria, something that's come right back into style.

Continuum features guns, bombs and large explosions in outer space. It is basically a spaceship/space-based shooter game. The game is actually an off-shoot of another game with a hardcore following: SubSpace. Developers rebuilt the community and it lives on today.

Continuum also features several different custom zones which are available from the developer's web site.

From freakmonger:

Ever imagine what it'd be like to play Asteroids against your friends? Want to savor the satisfaction of blasting people out of space in some addictive side-scrolling 2D spaceship shooter action?
Slap on some snazzy graphics, guns, bombs & big explosions and the beautiful revelry of flying past your enemy's debris as they cuss at you, and you have Continuum download, the longest running massively multiplayer spaceship shooter game running today.

Continuum 0.40 is licensed as Freeware for the Windows operating system / platform without restrictions. Continuum is available to all software users as a free download (Freeware).

Continuum Virus and Malware Tests:

For security reasons, you should also check out the Continuum virus and malware test that has been uploaded; additional Continuum screenshots may be available, too.