Since there is no official patch specifically numbered "v121" for Green Hell VR (the game generally follows main update numbering like v1.0, v1.1, v2.0, etc., with subsequent hotfixes), it is highly likely you are referring to the (or a subsequent hotfix version in the v2.x lineage) for the PCVR version via Oculus Link/Air Link .
(minus one point for occasional physics glitches and lack of co-op). green hell vr v121 link
In Green Hell VR, you'll find yourself in the midst of the Amazonian jungle, with no tools or supplies to aid in your survival. You'll need to gather food, build shelter, and fend off predators to stay alive. The game features: Since there is no official patch specifically numbered
: Get the ultimate survival experience for PC on Steam . with subsequent hotfixes)