Play Diagonal Two Squared against a level 0-100 computer with two players on the same device, and now play with friends over iMessage! Diagonal Two Squared is a game similar to Connect Four but essentially with the board rotated at 45 degrees. This allows for play on two "sides" from the start instead of the original game, on which you only play only along the bottom. The app allows for two players to play on the same device, to select a level from 0 to 100 computer to play against, or to play with friends over iMessage.