If you do not yet own the base game, it is frequently available at a significant discount:
: A free prequel version of Spirits of Amazonia is also available for VR players on Meta Quest and PlayStation VR2 Green Hell Spirits of Amazonia ke staЕѕenГ zdarm...
Since the expansion is a free update, you do not need to download it separately from third-party sites—doing so may expose you to security risks. If you do not yet own the base