Ice Age is a hack of Awesome Possum... Kicks Dr. Machino's Butt that originated in Russia. The hack is based on the movie of the same name.
Overview
In this hack, Awesome Possum's sprites have been altered and his lines have been completely removed from the game. The levels have been changed to make them more of an ice level. Some of the text is left in English.
Video
Ice Age (Sega Genesis) - Gameplay (Russian Pirate Hack)