Do jampacks have the whole game on them?

If you mean any game here is riven. First you escape the prison the go all the way to the right and go up the steps. Then you push the gate room button four times and then you go down the other steps...

there is a lot of good games

I believe there is online mode, people might still play it. If not, you can play co-op or against your buddies split screen. Also, there are 2 more Bakugan games if you are still interested in the...

to entertain little kids.

Space invaders!