PronPack 6: Pronunciation of English for Brazilian Learners provides materials for 18 lessons focusing on common difficulties faced by Portuguese-speaking learners.
Pronunciation puzzles are challenging game-like activities which students can do on their own, although they are fun to do in pairs or small groups. They include such puzzle types as mazes, sudoku, word searches and crosswords.
There are 18 units in the book, each concerning a different aspect of grammar. For each unit, there are photocopiable pages - one for the song, one of practice exercises and one which is a game.
There are lots of different game types in this book - board games, crossword puzzles, card games, chant games... Why games? I like them because they offer bite-sized challenge.