From publisher's website:

If you're looking for a fun way to improve writing and grammar skills, this game is for you! For 2 to 6 players, grades 1st and up. Rules are easily mastered. The Sentence Zone can be played at six levels - from Level 1 in which the player builds a subject and verb sentence, to Level 6 in which the player builds complex sentences with independent and dependent clauses. With over 500 color coded cards, students are sure to be unique and entertaining every time. A great reinforcing individual activity where a player keeps track of his score from day to day, trying to top his previous score, or a great group activity where competition drives creativity and learning. An instructive and enjoyable way to shatter the tedium of English grammar lessons!