From not being able to play Boneworks for 15 minutes to being able to play for 2 hours straight, this is probably one of the best solutions to smooth locomotion motion sickness.

Could not recommend more, Also the devs are really cool!

This is your best bet for fixing your nausea in VR aka simulation sickness.
Think of this like training wheels for bicycle, use this until you get used to VR.

My favorite options are:
Room effect with circle view,
instant animation with the longest keep and hide time
even smaller circle for rotation
a dark big black room with white dense grid,
just a little transparency for room,
and some fixed effect for the left one. (circle is only small enough but biggest it can be for me to be able to see the room from all peripheral sight where it is most sensitive to movement physiologically, a weird sentence but you will understand when you try :D)

I did not actually play for a long time but I tried brute forcing to induce nausea by spinning and walking backwards at the same time while this application was active and it still protected me, so I assume it will work for longer times too.
I would still take it slow though, dont go for games where you fly and jump around immediately. I will personally take my time and combine all the tips I found for VR sickness like ginger and cooling my body etc.

I am actually kinda pissed because search motors never used to show this app when I was searching for exactly something like this! I think it is because the app name does not describe what it actually does.It should be something like VR Motion Sickness Cure so people can find it. I should have been found this a long time ago when I typed "how to fix vr sickness"...

This program can have an overall change for vr users across the world, personally I do not have motion sickness but I use this as shader for my screen like when a game is too bright, it's really helpful for immersion too :) also have you ever wanted to look through gas mask in vr well this can help you do so. Overall its a 9/10 for me.

Works great for motion sickness. I got this to finally make the transition from teleport movement and ended up going from about 10 minutes max in free motion to 45 minutes on my first session. After using it just a few times I don't have any problems any more. I was very sensitive to VR sickness for years and this was the thing that helped me get over it best. Combined with NALO I think anybody could do free movement on their first session with it.

Great tool to reduce motion sickness. I will use it with thouse games without teleport (best way to eliminate motion sickness for me). Fast help from dev. Read forum comments if it didn't work.

9.9/10
Makes most games actually playable. Incredible work, cant believe that this doesn't come standard on most games/with quest. Buy this, support this dev!

Feature request: Make it so you can turn on just the crosshairs and leave it on all the time, even when not moving and without the black ring/room effect. Just simply a crosshair overlay. Maybe possible but I haven't figured it out.

nothing helped me fix motion sickness in pavlov vr. this did.

Definitely worth it if you get motion sickness and your game doesn't have native vignette support. Recommended!

OVR Locomotion Effect : Anti-VR Sickness is a free demo VR overlay app. It worked on my HTC Vive system, looked ok, worked ok. Maybe needs instructions on setup.

Try it, it might help you in VR.

I got a free key for this from the Steam Curator program.
ViVE VR curator group

This is an excellent tool to help with motion sickness. Now I can play smooth locomotion games for more than 10 minutes.