Futuristic and more along the lines of 'grown' than 'manufactured'. Nano-tech, probably. The texture is bad because I havn't had much practice with textures.
Actually, they are curvy because wings doesn't do sharp edges well.

But the in-game reason works.

'It's not a bug, it's a feature'!
Next screenshot should feature a rocket...Not sure when, in seven minutes my brother gets the comp.
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If I only could remember half the things I'd forgot, that would be a lot of stuff, I think - I don't know; I forgot!
A* E* Se! Gd! $-- C-^- Ai** M-- S? Ss---- RA Pw? Fq Bb++@ Tcp? L++++
Some of my webcomics. I've got 400+ webcomics at Last count, some dead.
Sig updated to remove non-working links.