For VR specifically you really need to think about how the player is gonna move around your world. I recommend the Teleporting method you see in games like The Lab and maybe even the “warp” teleport you see in DOOM VFR. The former comes with the Seam VR package for unity you can get from the asset store for free. The DOOM way may take some custom work though.
Either or, the reason it’s important, is because bad VR movement will, and absolutely has ruined plenty of VR games.
Traditional movement will make you feel sick.
Spinning in place will make you feel sick.
“Loose” or “floaty” movement will make you feel sick.
Tight and restrictive movement will make the game awkward to play (and make you feel sick)
VR is very experimental right now, and as such there really aren’t any “standards” you have to adhere to. So take everything I just said as you will, but also really feel free to experiment and try whatever you think will be fun.
Side note: If you havn’t yet, I recommend trying out Vanishing Realms. It’s not a spectacular game by normal standards, but as a VR game it is very comfortable and fun to play. I recommend it to anyone looking into VR.