Games To Learn English is a free site with many English-learning games.

Yes, there are a zillion online sites with English-learning games.

This one, though, lets you very easily assign specific ones for homework. Of course, I don’t assign homework during the pandemic, but this could be useful when we return to normal times.

I’m adding it to:

The Best Sites Where Students Can Work Independently & Let Teachers Check On Progress

The Best Online Homework Sites For English Language Learners – Please Offer Your Own Suggestions