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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Pretty. :) For those who haven't tried it, those sparkles on the diamond shift and glitter as you change perspective.
Transparent "ship" may be a little bit generous though - this thing is a ship in the same sense a wagon is a car. :P It's going nowhere fast.
Huh? ... Oh. Engines. Knew I forgot something.
Drat,
-Dirk