In this special game of action, you must use the head as much as the reflections! It sees with your tank and it annihilates your enemies, but when you shoot you must make or a sum/remains or you failed the shot!
Like in the Tetris, you must eliminate the pieces, but not ordering them by form if not making accounts! If the sum of that they estan alreededor of your card is equal to his I number, they are eliminated