Zoo Tycoon 2: Extinct Animals is a video game expansion pack for Zoo Tycoon 2. an unlockable animal, usually a deformed version of an ambient animals. Zoo Tycoon 2, free and safe download. Zoo Tycoon 2 latest version: Build your Animal Paradise with Zoo Tycoon 2. Zoo Tycoon 2 returns the player to the. Zoo Tycoon 2 is a 2004 video game developed by Blue Fang Games and published by Microsoft Game Studios and MacSoft Games. Originally released for Windows, Zoo Tycoon 2 is also available for Windows Mobile, PDA, and Mac OS X, although expansions are not included in the Mac version.