I bought this game from Steam sales and I've been playing it today. Playing and feeling horribly nauseous. I'm currently taking a second break from it because I felt like I would vomit soon if I did not stop. My head is just not 3D compatible.

Something I oddly found to be a little relieving, that helped me play a bit further, was burping. You read that right. I made myself burp when the nausea got too bad and it alleviated it for a minute or two. Sometimes sticking out my tongue helps a bit too. It's very strange.