Half-life arachnaphobia mod?

This mod isn't meant for playing though. It's used by psychologists in canada to treat patients that have arachnaphobia. HL offers a cheap alternative to using expensive VR equipment to train patients to deal with their fears. That would be a sweet job. Designing 3d environments that play on peoples fears. You'd be like an evil genius, only one that cures people. That would be fun. The full article is here.