The game Cronus is not just another game because this game brings the big theme of Imagine Cup 2012, “Imagine a world where technology helps solve the toughest problems”. Therefore, this game brings the humanity issue. The story of this game resolves around environment accidents happened in the past which have great impact to humanity such as the Chernobyl nuclear and Exxon Valdez oil leakage. The game, which falls under the puzzle genre, a plater will go back to the past to “fix” those events.