2x2 (Two by Two) is a multiplication puzzle game. Your goal is to solve multiplication puzzle where all digits are replaced by letters. To achieve best score you should solve puzzle with minimal number of errors and in minimal time. 2x2 is easy to learn but hard to master. Game is simple, smart, and addicting. Simple: rules of game are very simple, only basic math skills are required to start playing game. Smart: this game will allow you to test and improve your math skills, calculation skills, logic, and even knowledge of probability theory.