As of May 2021, Spatial is available on Steam and is compatible with all Steam VR-compatible headsets.
Oculus Rift & Rift S
HTC Vive/ Vive Pro/ Vive cosmos
Pimax 4K, 5K, 5Kplus, 8K, and 8K plus
Samsung Odyssey and Odyssey +
Varo VR-1 and VR-2