Are there any? I'm racking my brain here, but I can't think of any that I truly consider to be Steampunk. Cyberpunk and Biopunk are absolutely everywhere largely because they inherently make for good gameplay.
The only ones I can think of are Bioshock and Fallout, but they have an art-deco thing going (well, Bioshock does, but I'm not sure what the weird 50's retro-futurist style in fallout is called, so we'll go with art-deco), instead of the pseudo-victorian-industrialisation era thing going on, which is pretty much what defines Steampunk.
The only ones I can think of are Bioshock and Fallout, but they have an art-deco thing going (well, Bioshock does, but I'm not sure what the weird 50's retro-futurist style in fallout is called, so we'll go with art-deco), instead of the pseudo-victorian-industrialisation era thing going on, which is pretty much what defines Steampunk.