One of the things I did as a tutor is to before class write sentences then cut them apart by words and phrases to be put back together or mix and match. (You can buy refrigerator letter magnets but I made my own.)

It works for multiples or for just one person. Some things that are difficult tp learn in a language are prepositions and tenses and this exercise is great.

Something else that I did was not a game but was an aid to learning homonyms. I pointed out that frequently a word has the clue inside it. For instance, 'hear' has 'ear' inside it; 'here' and 'there' have the same root, etc.