First off, this is an early access beta. I bought it because it's Oculus Rift DK2 compatible. Despite my rating, I say do not buy it yet unless you're interested in providing feedback for the beta and don't mind dealing with an incomplete and very buggy game. It's got issues, big ones.
It's extremely unstable. It's crashed several times and I had to verify file integrity twice because crashes corrupted the defaut demo parks. Took me the better part of an hour and a half to get it to work well enough to test out one of the coasters. I downloaded the coaster of the month from the Workshop for this because there isn't much to the demo parks that come with it by default.
It loads slow as well and has a tendency to get to the edge of crashing during a load. I've found the best thing to do is sit back and not touch anything while it's loading. A few of the windows and taskbars will go white while it's loading, but after a few moments it finishes and everything ran fine for the most part.
My crashes were mostly related to loading errors and Alt-Tab, the game does not like Alt-Tab and has a nasty tendency to freeze if you do. Once everything was loaded it didn't give me any trouble so far, but still remember to save often if you're building something because I wouldn't trust it to not crash while I was building after a while right now.
The only rides you can test are the roller coasters. Hoping that will change in the future. The coasters are cool, but it'd be nice to have a go at anything in the park you can build, including the flat rides. Still worth it for only the coasters, but I'm hoping there will be more to it than that later on.
I got stuck a couple of times in some of the scenery when walking about. Not a huge deal, just hit the ticket icon to teleport back to the entrance. Not really a big problem, but it does happen on occasion.
It also very badly needs a mouselook button. A lot of the rides and scenery is very tall, but as far as I can tell you can only look about at ground level and can't look up at anything when roaming the park in first person.
DK2 support needs work. The view doesn't twist or turn with the ride and simply remains level while rising and falling with the height of the ride and never twiting or inverting with the track. Also, positional tracking for leaning forward and back is reversed, leaning forward makes the player move back rather than forward. That might work for a very basic coaster with no banks or loops, but it doesn't cut it for anything complex enough to be fun to ride in VR.
Hopefully Oculus Rift support will be expanded in the future to include wandering about the park itself and trying the other rides as well. Right now it's limited to testing out the coasters only.
Why recommend it then?
Well, this has huge potential. The Workshop support means that there will be hundreds if not thousands of coasters to play with in the future. People can get really creative with this and it's sure to impress, especially if there's more to it than just riding coasters. It also gives me a solid framerate and no judder on my system, I've got a very nice PC 7970 and 3770k, but I can crank everything to max and have it run smooth in VR, which is very nice. A comparatively weak system should be able to run this at lower graphics settings in VR without too much trouble and it still won't look bad either.
No management. There are no resources or management happening. It's a creative toy that doesn't need to be managed to enjoy. The focus here seems to be about building and experiencing the rides, not worrying about customer happiness, whether there are enough bathrooms, or the price of hot dogs. I like games that do that sort of thing, but it's nice to have something like this that is a purly creative tool that can be experienced and shared.
Despite the flaws of the Oculus support, it's still a lot of fun to ride the coasters. The camera desperatly needs to be fixed, there are demos that far outclass what this can currently do because of this issue, but when that's fixed it will be a worthy investment due to what can be accomplished with this game.
It's also pretty, not amazing or anything, but the graphics look good for a sim sanbox type game. They run well in VR and look good in the DK2 HMD.
I recommend this game because it's got huge potential, especially for those with VR. It's not there yet and if you may be better off waiting until the game is further along before picking it up. It's an early Beta though, so it's issues are not unexpected, though it is a bit more unstable than I'd like and that alone almost got it a "no" for now.
The creative freedom it allows for, the ability to share and download parks, the potential it has in the future, and the fact that it's still fun to play with despite it's flaws made up for that though. If you've got a DK2 I don't necessarily recommend buying it now, but keep an eye on this one and mark it for later. It will be worth picking up once some of it's problems have been ironed out as the beta progresses.