Paranoia! is an expansion pack by Z-studio. The expansion has over 40 animals and has been one of the most anticipated expansions of the zoo tycoon user made franchise next to Island Excursions and Radical Remake. The expansion was thought to have large amount of glitches, the most severe being a glitch that prevents certain staff, the cloning button, and the extinct research lab from working properly, it also causes the ingame menu to glitch, to point of being unusable, but Z Studio updated all the files fixing the bugs.