The extra features on all the DVDs are very similar, I'm afraid. I own all 11 of the DVDs, and you're not missing much, when it comes to features <_<
Many of the sequels just have
- the simple bios of each of the characters
- the Jurassic Park Institute data on each dinosaur in the movie
- the games, like you mentioned
- and the odd little feature, designed for young audiences. Very little of value.
- some sequels have a "now playing" section in the features, simply listing a few LBT and Jumpstart products that have been released. no description, not really any toys or videos. Not really much
