Back in the 90s there was a push to make Vegas more “family friendly” (i.e., Orlando-like) and there were several theme park-like attractions around at that time.
There was actually a small attempt at a traditional outdoor theme park on the grounds of the MGM Grand resort called MGM Grand Adventures. I was there one time on opening day of a season in very early Spring. It was a pretty and well-themed park, but very small. I remember very little about the rides, except not feeling too impressed. I do remember thinking at the time “well, I never need to do this again”
The Luxor resort had three attractions that told different parts of the same story. If I recall there was a motion simulator, a 4-D movie and (I think?) a boat dark ride. The thing that was interesting was that you could experience the attractions in any order and the storyline still made sense. I thought it was a really interesting and imaginative concept. I see some elements of that storytelling approach today in “Rise of the Resistance” at Disney. Granted, you don’t experience the ride elements separately on your own like at Luxor, but there are multiple ride experiences combined together to tell one overall story.
But, I think the best attractions in Vegas (or really, ANYWHERE at that time) was Star Trek: The Experience at the LV Hilton! For a Star Trek fan, this place was nirvana! It really showed how good Paramount Parks creative could be when not limited to the budget of a seasonal park. The theming, attractions and quality was top notch. The Klingon Encounter motion simulator was state-of-the-art and easily the best simulator of that type. They also introduced immersive themed food & beverage and retail many years before Universal did it with Harry Potter. (At Quark’s Bar, I remember drinking two “Warp Core Breach” drinks which were especially potent). Part of the queue for the simulator included a part where you were “beamed” into the future and onto the Enterprise-D. It’s surprisingly similar to the same flavor of experience today on the Guardians of the Galaxy coaster at Epcot (just done 30 years later). There was also a Borg 4D movie that was very well done. I’m pretty sure that if I could go back and experience ANY attraction from the past, it would be ST:TE!
Then, I guess Vegas decided to re-embrace their “sin city” roots (the whole “what happens in Vegas, stays in Vegas” campaign) and the effort to be Orlando-in-the-desert was left behind. That’s not a bad thing—Vegas is its own very unique part of American culture the way it is. But, during that brief attempt there were a few really well done themed attractions.