If you want fun do this build a park or load one get cheats unlock every thing and get every thing including all the creaturs/dinos then make it the best park you have ever made this might take timing but it will be worth it then when you are ready and made sure it is a brillient park [SAVE IT!] then let some dinos out by demolishing all the gates and because if it is a good park you will have lots of visitors [this if funny for the t-rex and the one with the spines] let them loose and play the last man standing [the last person to suvive] when this is over get a chopper and get him out of there [or her] and because you have saved it you can let friends see you park again ang again because you can load your saved park or let them laugh at the visitors getting chased around like a headless chicken hope this will make you laugh

I highly recomenned that you research these items in order:
1. Weather Guard
2. Hatchery Immunization
3. All the vaccines(whatever order you wish)
4. Visitor Sheltor
5. The rest is up to you!