Is it possible to have all 25 species of dinosaurs in your park in the PS2 version of Jurassic Park: Operation Genesis?

It's in the right section. I've never played JP:OG, so I can't say for sure. 

I have the PS2 version. You can only get 3 sites with a maximum of 9 species(3 at each). It's still fun and cool, but that's the max. I know you can mod the PC versions. I don't know if there's a way to do that on the PS2 version(I haven't tried it as I'm not too good at that stuff). However, completely unmodded, you can only get 3 sites in the PS2 version.

Oh man.

So you can't get all the species then? Can you get the rest of them through amber or something?

Unless you find a cheat or can mod it, no. Like I said, still a fun game and you can try out tons of different species, just not all at once.

Never really got a chance to play PS games. I only have Nintendo consoles.

I know on the PC version you can mod it, I've made it so that I can unlock 7 digsites instead of 5, but I'm not sure if you can do it on the PS version

yes, some of the text files are mod-able. But you have to copy the files to your pc first to mod it, then burn it to your cd.

if I may, I suggest you to buy the pc version instead, since almost all except the model are mod-able in the pc version