Subnautica (Multiple)
Also available as a non VR game, this game is shit scary in VR, but is a very good game. Check out some gameplay. Basically, you have crash landed on an alien planet and you have to gather resources to survive underwater...i wont spoil it any more.
NoLimits2 (Steam)
The best rollercoaster game by a country mile, it has a demo which has 4 or 5 coasters, which will do you just if you dont want to end up splashing out for the full game to build your own coasters and have access to hundreds, if not thousands already built.
Batman VR (Steam)
More of a tech demo IMO, you act as Batman, solve a few crimes, investigate a few other things, i have it in my library, my kids have completed it, but i'm not into Batman that much, and it does only look like a demo of tech to me.
Raw Data (Steam, Oculus)
Wave shooter, has multiple scenarious where you get to fight different enemies, but also has several(i think its 4) chracters for you to control with different weapons(one has a light sabre, another has a bow and arrow, another guns). My son bought this, i have played it a couple of times and it is cool, but is very niche and doesnt seem to have a lot of replayability to me. Oh, i forgot, its also multiplayer.
Pavlov VR (Steam)
Ever heard of a game called Counter-Strike, meet its VR brother, complete with realistic reloads and weapon mechanism(you have to reload and also make sure there are bullets in the shaft of guns that need them)
Project Cars 2 (Steam)
The BEST VR racing game by some distance IMO, but bear in mind, this is a pretty hardcore sim, you will not be able to just jump in a car and even get near to the front of the grid without learning the tracks and the way the cars handle with different setups, i bought a wheel and pedals to play this, its awesome, but HARD.
Fallout 4 (Steam)
Well, it's Fallout 4 in VR, check the reviews for this, i havent played it yet and i know some people said they had motion sickness from this game IIRC.
Superhot VR (Steam, Oculus)
I own this, but have yet to play it, it gets really good reviews in non VR, and by all accounts the VR just takes it to a whole new level, like a FPS where you can slow down time and catch bullets/guns, yeah, kinda like the Matrix in VR, but on a timer.
Brass Tactics (Oculus)
Remember old school games like C&C and tabletop style war games where you had to gather resources to build your troops/weapons up, this is it, and its fantastic. There is a demo for this which is free, grab it before you pay for the full game, and make sure you are sitting down when you play, or you WILL fall over. I really like this one.
The Climb (Oculus)
Ever wanted to climb up rocks, nope, me neither, i'm petrified of heights. This lets you do it in VR, and is quite the workout and can get very challenging and competetive when played against friends. It sounds like a really bad idea for a game, but is tons of fun and pretty challenging to play. My son(16) kickd my ass at this badly.
Beat Saber (Steam, Oculus)
A time rythm style game that is a blast to play by all accounts, my 2 sons love it, i have yet to play it, looks a bit fast for my old ass reactions. Think of old school rythm games on steriods to dace/trance music with light sabres...yeah, it sounds cool.
Eleven Table Tennis (Oculus)
If you dont like competetive sports games, then dont get this, stupid hard once you get past the first 2 easy settings, and online competition will make you feel like you have been dumped in the Olympics, it plays extremely well and is very realistic, a proper sim of a sport. I played this a lot when i first got it, but don thave the time needed to play enough table tennis to care about getting good. Still a great game and the developer game me a 24 hour demo for free when i spoke to him on Discord.
Echo VR (Oculus, Steam)
Multiplayer floating football in space. You grab the ball, try and navigate your way to the opponents goal, and try and score, and its all online against realy people. Great fun and a good blast, i picked it up on a Steam sale and it doesnt get played much now, but still worth it if on sale.
Robo Recall (Oculus)
This is a very good shooter(many call the best) in VR, it does seem a bit tech demo to me, but i got it free with my Rift and it is polished as hell, great graphics, great weapons, great gameplay, but doesnt last long enough or have enough variety, but if you want to be a high score king, then there is tons of replayability here.
Shit, that took a little while. I do have a lot more games than that, like the Marvel VR that i just havent played yet, i try and pick most of them up when they are on sale.
Feel free to ask me any Q's, i got into VR last year and couldnt believe how good the tech was, people just shitting on it for the sake of it are probably the same people who said 3d printing would never take off.