Back when I was doing research in VR about a decade ago, everyone followed the golden rule:
do not cause any sudden acceleration!This was because studies had regularly shown that doing so produced feelings of motion sickness. You could have teleportation or slow acceleration, but not any sudden movements like you would see in console FPS games.
I recently tried a couple of games on the Oculus and was surprised to see how common FPS-style 'walking' is in VR.
It make me pretty sick so I'm wondering: is there new research that refutes the 'golden rule', or did developers just decide to stop following it for some reason?
Strangely I don't hear people talking about this as much now and I've wondered why.
One guess is that maybe the higher the quality of the headset the less pronounced the effect.
Another odd thing I'll note is that in the early days of FPS flat screen shooters this also used to happen. I can remember people talking about it at the time, but also if you read Masters of Doom they talk about how early players and developers would play with a trashcan next to their PC and in the middle of the game get so nauseaus they had to puke.
No idea why this effect became less prevalent with flat screen games then, or (seemingly) VR games now.