Well first IRIS is not free and because it is third party it does not work in some games (i’ve tested the trial)
Second, you can wait for eternity for developers to start implementing you hardware. Each harware dev thinks he is special and game devs with rush into cooperation. No. End of story. This battle goes on for decade already.
Even TrackIR is broken right now in Star Citizen (yes I know it is alpha).
And also gaze to mouse. Is it really that hard to put a few lines of code that will make your cursor position itself directly at your gaze point with the same coordinates on screen. I’m not asking about any fancy smoothing or whats so ever algorithm.
Just plain and simple Gaze X,Y = Cursor X,Y.