Many chapters to remind us when you need a double consonant, how to spell homonyms, know the etymology of words to spell the better, clarify some particular difficulties for the "e" dumb flush out some intruder choose the right accent, find the kind of adjectives or nouns, revise specific plural including compound words, grant fanciful adjectives, slice in verb endings, grant a verb with a collective subject, differentiate grammatical homophones etc. and as a bonus a final chapter reserved for texting, that is to say the phonetic French.
And all this in the form of games, with QCM, words to holes, filling grids, tables to complete, letters to put in the right order.
It's fun, informative and fun and above all effective.