I don't mind if BTTF goes cartoonish or not...
But Jurassic Park, on the other hand, must be realistic.....or not. I guess it could work. I don't know. As long as the story is good and the gameplay fun and the graphics at least comparable to Wallace & Grommit.
Also, You'd better bloody well be able to die in Jurassic Park. Maybe in BTTF creating a paradox could result in an unwanted game ending, but I don't think it needs deaths per se. But both games need to feel dangerous. BTTF was all about time limits, high speed action, and JUST making it. This
needs to be presented and experienced in the game. Jurassic Park's danger atmosphere goes without saying...
And they'd just better get Michael J Fox and Christopher Lloyd to voice it (unless those characters won't be in the game) or it'll be a huge epic fail. I know Fox would be up for it (he's done quite a bit of voice work since his condition) but I don't know about Lloyd. And Jeff Goldblum for Jurassic Park if nobody else.