Oxford University Press has many free online activities for their many textbooks supporting English Language Learners. One of their more recent sites supports their Stardust series.
Several of the activities are good, and a couple are exceptional.
I particularly like their Sentence Machine games that show a picture and then challenge students to create a sentence using a slot-machine-type visual. In fact, I like them so much that I’ve put two links to these games under the Favorite Sites section of my English Themes For Beginners page.