Point & click adventure fans should definitely point and click at this cheap PC deal, as GOG's big fall sale continues ahead of Cyber Monday. Four Wadjet Eye adventure games have been bundled into a single competitve package, including Primordia, Gemini Rue, Resonance and The Shiva. All of which usually sell for more than this apiece.
I'd personally recommend gritty cyberpunk masterpiece Gemini Rue as the highlight of the package, though Resonance is also excellent. I've heard mainly good things about Primordia and The Shiva, though they don't quite match the first two in terms of quality. Be sure to check your Steam backlog just in case, since Gemini Rue is no stranger to a bundle or two.