Though I believe to have the vast majority of independent horror games created over the years, I'm still missing a few I know exist out there somewhere. If you have any of these games or any others I missed and wouldn't mind sending them in for the site, please email me.
Microstuff Studios
Jason's Resurrection Beta 0.A, 0.B, 0.C - I don't the full details of these early beta releases, but here's what I remember. I first visited the Microstuff site back in mid 2000 when it was at mircostuffstudios.net. By that time, beta 0.C was up but not the older ones. From what I've heard one of these betas let you explore Camp Crystal Lake, eventually coming to a dock. When you jump off into the water, Jason appears standing on it. I'm not sure if that was the end or how much of the camp you could explore, but I do know it included weather effects - thunder and lightening, possibly rain. If anyone has more details or screen shots of betas A or B, send them in.
Beta 0.C I actually do have. It was the first Mircostuff demo I downloaded and actually inspired my own Halloween game. It takes place on the bottom level of the resurrection building, which is a subway station. You play as Jason and can explore the first few rooms and pick up his machete. I still have the beta but I'm looking for a new copy. I somehow screwed up the script file and can't play it anymore. Check out some old screen shots though.
Halloween - Yes, besides Friday the 13th games, Mircostuff was at one point working on a Halloween game. It was never finished and I have no idea how much was actually developed but there was a demo. I never got a chance to download it on my own computer, but did play it. You control Michael Myers and explore the Myers house. It wasn't much but still cool as hell. Again, any screen shots would be appreciated.
I know Mircostuff had a pretty active message board so I hoping someone out there has some more information. I don't have much more but this final screen shot from an unreleased version of resurrection.
Fista Productions
Halloween II - Fista Productions was pretty much dead by the time I discovered the horror game scene. Their major games are alreadly on the site, but I believe there are two I'm missing. I know there was a demo out for Halloween II I've never played. For some reason I'm thinking there was another demo out besides this one, but I could be wrong.