There's a PAL PS1 Ghostbusters game that's pretty much rubbish. For Japanese PS1 there's Guntu: Western Front 1944 which is a low budget affair worth a spin, and the two Simple Series: The Gun Shooting games. The first one is alright, a typical low poly count sci-fi type affair, the 2nd is a weird Point Blank style thing I never wrapped my head around. Ghoul Patrol was another spooky Namco entry that plays like a Halloween themed point blank.
I had never heard of the Gunfighter series up until a few years ago. There's a PAL PS2 sequel that's fairly well done. It's basically Time Crisis set in the old West.