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i am guessing it is Castlevania



007: Tomorrow never dies or Metal Gear Solid: VR Missions

I think its bertha...if its not, you could look at the escapist magazine forum, there is a thread there named "10 - Old games you remember playing but can't remember the name the of"

does it involve garden gnomes?

It could be metal slug.

this ps1 game has characters of robots and its a fighting game...i played it ten years ago. i remember playing a character. A robot cowboy with huge hands that he uses to travel throughout the level...