Can't get enough of Corpse Party? Please post any fan games relating to the Corpse Party series you have come across!
There is "CORPSE-PARTY ZERO" which can be downloaded here, and you can watch a playthrough.
I just recently found a fan game called "Seiko MindBreak!".
Unfortunately the link to the fan game is down, but the 8-bit April Fools' version of the game is up. Also do note that this game is Japanese only.