Works well with Tobii Computer Control, Tobii Windows Control 2 or the free Tobii Gazepoint. I couldn't use Mill Mouse, another free option with really precise cursor control, with it. My experience is that point and click based games that are a couple of years old like this one from 2017 sometimes are pickier as to which eye tracking software works good. But usually either Mill Mouse, Gazepoint or Optikey will work and those are all free anyways.
I imagine Voiceattack will also work if you setup the correct mouse movements, however you do need drag and drop.
At this time, Adaptive Hacker Khan has 14 views for Gorogoa spread across 1 video. Less than an hour worth of Gorogoa videos were uploaded to his channel, roughly 1.03% of the content that Adaptive Hacker Khan has uploaded to YouTube.
1