[S] Steampunk or Cyberpunk Game

If you liked Human Revolution then you could try Syndicate

Arcanum is a nice old-school steampunk rpg in the vein of the Baldur's Gate series. $3 now on gog.com

If you liked Deus Ex:HR, check out the first Deus Ex, if dated graphics don't put you off. It's a classic and perhaps the best game of all time (for me at least).
You could also try System Shock 2, it has a similar feel (and age heh) and insane atmosphere. Still one of the scariest games ever.

E.Y.E.: Divine Cybermancy comes to mind aside from the first Deus Ex.

scrapland

Resonance of Fate is nice, but not on PC I think (have it on Xbox360).

Im waiting for Shadowrun Returns!

Old Syndicate and Syndicate Wars (no shooters,but awesome)

System Shock 1 and 2 (System Shock 2 is imo still one of the best games out there)

E.Y.E, bit complicated and not always good executed,but still fun

Shadowrun,although I have the say the game is really really bad. The new one that is in development will probably be very good though.

Hard Reset (didnt try it though)

American McGee's Alice has Steampunk elements

Fallout 3 (has a lot of "punk" elements from different "punk" genres)

Steel Empire (pretty damn old)

Blade Runner?

Beneath a Steel Sky is an old cyberpunk adventure game (free on GOG!)

wait for watch_dogs

Hacking games such as Uplink and Dark Signs create a pretty good cyberpunk atmosphere, though both are primarily text based.

a good cyberpunk game is "cyberpunk" its coming in 2013 though

Well I recommend Shadowrun for SNES and Genesis, and check for Shadowrun Returns. I also like the original Deus Ex.

Hard Reset is great actually.

Also, someone mentioned Blade Runner which I also recommend. Very good adventure game.

I'm going to second the idea to keep an eye out for Watch_Dogs. Game looks freaking awesome, and I cannot wait to get my hands on it.

Wait for "Remember Me"... that game looks fucking AWESOME. Reminds me of Ghost in the Shell too.

killing floor with steampunk DLC

City of steam

Nightlong. Probably the best point and click game ever. Totally cyberpunk.

There was this not very good, but I kind of enjoyed it hack n slash game a while back.. Silverfall I believe. Had some steampunk elements. Like steampunk dragons and what not, including weaponry and armor.

Check out E.Y.E

Its only 2.50 right now and has been compared to Deus Ex.

Well you seem to be set on story based shooters, but if you like puzzle platformers, try Vessel (steampunk).

Binary Domain is a tps, story isn't anything super phenomenal, but it has a real cool cyberpunk style world.

Ultima Worlds of Adventure 2 Martian Dreams is a fun albeit old (as in it came out 20 years ago) steampunk RPG. It's free on GOG so you can just give it a go.

Messiah... Ooooooold game with interesring idea.

many good syerpunk games... almost no good steampunk, sadly.