If you have an interactive whiteboard in your classroom, try these PowerPoint games. Some are ready to go, some need you to type your own questions into the template.
The PowerPoint games I've developed here could be used in two ways. Either a zippy fun thing in the last few minutes of the lesson to test what you've studied in the lesson, or an activity which could lead to discussion of grammar/pronunciation/vocabulary. For each activity, I would suggest you look at my example, and then try making your own with the templates provided.
Take me to your PowerPoint games, Tiny TEFL Teacher!