The object of Letter Chain is to score as many points as possible by forming words using the letters given to you on the screen.
Words that have more letters or have difficult to use letters (such as Q or Z) are worth more points. The longer the word, the more it is worth. Letters that are along the edge, or are a corner letter are worth more points as well. At the end of each level, you will be award points for the time that you have remaining.