This is an actual 360° VR project. (Kind of) Look around by dragging your mouse. Additions: Y axis movement: You can now look up and down. Arrow key mode: To enter, just press any key. Mouselock support: To enter, go here: https://experiments.turbowarp.org/pointerlock/827259187 And then just click on the screen.
Thanks to @O2009H for the original project: 360° VR Test.