Most of the game's action takes place underwater and the gathering of resources for basic needs like nourishment or complex buildings and better gear is primordial. Subnautica is a survival-adventure game where the player is forced to explore a huge ocean on an alien planet. However, there are a few interesting games available and, judging by the current trend on market, it won't be too long until a lot more VR content will become available. Lastly, even though Valve jumped at the chance to sell virtual reality games for Mac users, the MacOS version of SteamVR is still in its beta stages. Another problem is that Oculus was never designed to work on a Mac, so you only have native compatibility for the HTC Vive headset. Simply put, you need a Mac with at least 8 GB of RAM, an i5 CPU or better and an AMD 290 / Nvidia GTX 970 graphic card or better to run the most basic VR content. Talking about limitations, the first one is related to the hardware as only the newer devices are VR-compatible.