I liked it. Get a heap of carnivores and set 'em loose in the park. The fun never stops.
And in Site B, I like to make 60 velociraptors in a confined area surounded by mountains, and put lots of cows in there. They all swarm together and maul the poor things.
And watching Spinasaurs break Tyrannosaur necks. And watching them maul things and swallow goats, and, and,
Flying choppers, and shooting vaccines! Fweee, it's raining immunisation!
...and there's park building and management in it...
Jurassic Park:OP is fun enough to dedicate a few hours to. Just don't get the GBA version. Pretty much all ports from console onto GBA kinda suck.