What style of science-fiction in your D&D ?

[TerraDave]

This- postapocalyptic remnants of ancient peoples and technologies. Also, clockwork horrors.

Headslap!

The original sci-fi in D&D mix was in the first D&D campaign--Dave Arneson's Blackmoor--and exactly this: technology of ancient times.

Or, apparently, a whole city of it:

 

[Ratskinner]

I have, at times, participated in games which feature "all of the above." I can't say I've had any inclination to discount one over the other. I will say, that despite the Cthulu-junior mind-flayers, I haven't found D&D to be a particularly good vehicle for "cosmic horror" and the like. However, I think that's more a conflict with the "heroic" nature of D&D's PCs.

With that possible exception, I feel its more about the presentation, rather than any particular subset of sci-fi. For instance; I've never been a big fan of D&D's psionics (any version of them), but there were 3rd party products with new "psionics" systems that I liked a lot more.

 

[Gilladian]

Please don't get your peanut butter in my chocolate. I hate mixing SF and fantasy. Although if I'm going to pick a D20 system and an SF genre, it will either be Gamma World, or possibly Victorian/pre-steam era.

 

[dkyle]

My 4E campaign started out as a pretty direct adaptation of Stargate. With islands instead of planets, and extremely inhospitable seas rendering ocean-going ships impractical (at least, to the home island of the PCs). Even the Go'auld as "magic jar"-style disembodied souls taking people over, instead of worms.

Later on, I ended up going more literally Sci-fi, with the PCs spending time with people at WWII-level tech, but also robots, and in a pretty much modern day society, where beings of PC-level power seen as "superheroes".