Last bad sickness hit was from Sable and Anti Chamber. There are few other indie games that effect me similarly. I thought it's lack of textures or crosshair in indie games, or may be it's the camera movement or both, not sure. But now, when playing first person games, i find myself worrying if it will make me sick. More I think, more I feel it. Yesterday I felt sick after playing Alien Isolation for the first time. It had textures, a crosshair, but camera was janky which made me worried and more I thought about it, worse it got and I end up deleting the game.