There are many options with vocabulary games. The most common form is the crossword puzzle. You can use the puzzle to help new English speakers figure out the meaning of words based on clues either in their original language or in simplified English diction. These are great follow-up exercises to a week's vocabulary lesson. Twenty questions is a game in which people attempt to identify an item based on descriptive answers. It is both a great teaching tool for new vocabulary and an exercise in reinforcing previous lessons. Helping your students construct their own vocabulary games can become a game itself, and one that will involve them and aid with English language immersion.