ScrumbleShip is the most accurate space combat simulation devised to date. Gather resources, construct a capital ship out of individual blocks, then pilot it with AI or human help against other players.
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The new release has brought about a flurry of activity on the server. Here's a space elevator someone is building. I think.
It's quite the eye-catcher, and there are several starter ships parked around it - I assume people keep flying to it to take a look!
Cheers!