I like Telltale games mainly because they tell pretty good stories within a story. I liked all the themes they put into Back to the Future and I liked their twist in Jurassic Park where you see another story already taking place within the movie story. I think their one big improvement over Back to the Future is their lip syncing. It was awful in BTTF but looks better in Jurassic Park.
Their character animations are alot better than in Back to the Future as well and all the character models look good. Only the textures look a little pale and flat.
I like the options where you can explore and examine different areas and items. The puzzle solving was pretty interesting as well in some areas. I'm sure the one thing you'll like most about this game are all the death sequences when you fail certain quicktime events.
Its the quicktime events that can frustrate you a bit. Some you need to react very fast and others have a bad delay! There are times where the shots are trying to transition one to another and the gameplay freezes for a second or two and thats the time it doesn't register your button commands. This was the only thing that really put me down.
The full game has 4 episodes that can easily take about an hour or two to complete each episode. Maybe a little longer if you want to explore and see everything.
I don't think this game was that bad but then again that's just my opinion. The games not hard at all and is pretty short, if your interested I would play it! Don't expect alot except for a storyline.