Mahjong Dimensions Back to School. School is already back in session, entertain yourself with a new version of Mahjong-Dimensions, especially made for back to school. Features stunning graphics, with blocks representing mathematical symbols, different schoolboy accessories or paper airplanes. So get ready to go back to school and make your brain work hard to try to complete the game in less than 5 minutes and 50 seconds! This game is one of the puzzle games. Enjoy and have fun in playing this free online game. Good luck.