The marine mania expansion pack lets you add killer whales, manta rays and other marine animals to your existing zoo, while Dinosaur Digs lets you add more than 20 prehistoric creatures to your collection, adds 100 new building materials, and puts in some new scenarios to keep you challenged. You must build, manage and maintain the zoo, keeping animals happy and healthy, keeping exhibits and facilities well maintained, and providing zoo visitors with all the amenities they expect, from refreshments and sanitary facilities to souvenirs and clean parks. Zoo Tycoon puts you in the role of an entrepreneur starting his own zoo. The collection includes the original Zoo Tycoon game, its Dinosaur Digs and Marine Mania expansion packs, together for US$49.99. announced Wednesday that users can now pre-order the
