A very good story, literally no actual game play.
It's Heavy Rain with Dinosaurs, so basically it's, to borrow a phrase from Yahtzee, less a game and more a movie you have to press buttons to watch.
It's got a really great story, operating as sort of a side story to the original Jurassic Park film, taking place during and directly after events of the first film. You follow (I can't really honestly say you "play as") a handful of character, jumping back and forth between a couple of intersecting subplots. There's Gerry Hardin, the park's chief Veterinarian who was a minor to mid level character in the first book and briefly seen in the first movie, and his daughter which is visiting the park for reasons which are never actually explained, but one of the few complains I've had with the Jurassic Park series is it's more and more contrived reasons to shoehorn the "children in peril" angle into the series. One character even lampshades this by asking "What is this? Feed your children to work day?" I'm not sure if Gerry Hardin is supposed to be Sara Hardin's father, as was hinted at in the second book. There's also a female mercenary hired by BioSyn to recover the embryos stolen by Denis Nedry in the first movie, and a group of mercenaries hired by InGen to rescue Dr. Hardin and his daughter from the island. A few new species of dinosaurs get introduced, including a new primary "villain" species, which is sort of an ass pull but again no worse then the Spinosaur somehow magically going unnoticed until the events of Jurassic Park 3.
The overall presentation of the game is excellent. The graphics are good, just a tad bit cartoonish at times but still very good. The game makes good use of the locations and overall look of the first movie, basically taking a lot of things that were briefly mentioned in the first movie and expanding upon them. At times the length this story goes to reference the events of the first movie all while making sure nothing that happens in this story directly interacts with the events of the first movie or strains disbelieve as to why they weren't referenced in the later movies gets a tad silly, but never to the point it's really a problem. John William's score, which I still defend as one of his better ones, gets well used here as well.
My only real complaint, and to be fair there really would be no way for the game to fix this, is with the dinosaurs themselves. The basic "look and feel" of the dinosaurs in the game is, by necessity, dictated by the first film and by extension the original novel. Jurassic Park was published in 1990 and Crichton had been writing the novel on and off for several years, so basically the science of the "Jurassic Park Universe" is based upon our knowledge of Dinosaurs in the mid to late 80s, which is somewhat dated at this point. It still works because unlike most media Jurassic Park treats its dinosaurs as living, breathing animals instead of stock Hollywood monsters, interchangable with Godzilla but it still is sorta jarring knowing the a Velociraptor would have come up to your knee, been covered in feathers, would have poised no threat to an adult human and probably wouldn't have looked all that out of place in a modern zoo's aviary. It's sorta sad that one of the greatest monsters of modern cinema was in reality practically the Roadrunner and wouldn't have been a threat to your average house cat.
Which I suppose brings me to the gameplay and the sticky wicket because there almost literally is none. The interaction has been boiled down to just token key presses or thumbstick wiggles whenever an onscreen prompt tells you to. You pretty much literally have no control over your character in the traditional sense. You never directly control your character in any real sense of the term, even to do anything as simple as make your character walk across the room or pick up an item. The game is one long cinematic broken up with "Press X to not die." There's a few parts which I guess technically qualify as puzzles, but there's no way to not get them correct because since the game's storyline is so linear there's no way to screw one up. Every encounter only has one possible outcome and only a handful of possible choices, so at worst you just trial and error it 3 or 4 times. There's no sense of accomplishment when you do anything and no sense of failure when you don't because your actions have no consequences beyond how long it takes you to advance to the next scene.
So it's an enjoyable experience, it's a good story well told and makes good use of it's license but there just no... game there. Someone watching you play the game would literally get the exact same experience as you playing it. You're no more control of the game then someone watching House is control of the show. It turns the controller into nothing more then a glorified remote. It's less Jurassic Park: The Game and more Jurassic Park: The Cartoon with an overly elaborate DVD menu.
This seems to be a phase that the video game industry goes through every couple of years, when the cinematic qualities of a game cause a little sub-genre of minimally interactive games to pop up. There were Laserdisk games like Dragon's Lair and the "Full Motion Video" games that popped up on early CD based consoles and PCs and I've never understood the appeal. Jurassic Park, along with Heavy Rain and Indigo Prophecy, seem to be the modern versions of this where you take a game and reduce the gameplay aspect down to the simplest possible level.
There was potential for a truly great game here had it taken a more traditional adventure game route. As it stands it's still not a bad... thing but it is a rather bad game. It literally would have lost nothing had it just been a damn DVD.