Zekkyou on 27 October 2014
If you haven't watched the anime then i'd definitely give Steains;Gate a go. It's a lot more focused on the novel side of VNG's, but the plot fits the description of "super creepy and have mind bending plot twists!" :p
I've also heard good things about Danganronpa, but i haven't had the chance to try them yet (have the first sitting on my shelf).
