The gameplay of Carnivores: Ice Age is identical to Carnivores: Dinosaur Hunter. Originally, the iconic killing animations of the animals were removed, and the Yeti was completely absent. The Survive mode from Dinosaur Hunter is also unavailable. Also, instead of the dropship picking up animals in the European PSP version, the prey immediately disappears after death. This was done in order to meet the PEGI 12+ rating requirements. 
The herbivorous animals once again became dangerous, and the Yeti was added. Also, the new Photo Camera was added, allowing the player to take photos of animals. The PSP version, however, adds a Laser Rifle to the game. On July 19, 2013, it was announced that two new animals, Hyaenodon and Indricotherium, were added on November 26, 2013. On December 20, 2013, Doedicurus and Andrewsarchus, the other two animals were added as a surprise when there's no announcement for Facebook pages. A new update on April 18, 2014 revealed a new species, Titanis, otherwise known as a terror bird. The App Store stated that the new update included "Minor Improvements". This update occurred on the same day as the Carnivores: Dinosaur Hunter update, and similarly, portrays the Titanis on the navigation map as a "?", as did the Iguanodon on Carnivores: Dinosaur Hunter. Titanis was added as selectable on August 14, 2014.