This is a really difficult one and I fully sympathise with you.
I think the problem is due to a combination of these children being pre-teens; coming to English lessons during out of school hours and because they might be getting blasé after 5 years of studying English.
I have a few suggestions: continue playing games they enjoyed last year but use different language. Take any games / activities books and adapt them to their age and level.
Try doing some project work with these students. As a first idea for a project: put them in groups and give them a topic to research; you can choose one linked to something you've studied recently. Ask students to prepare a poster that they will show (or present) to their classmates. I have answered other questions in this forum on project work; if you don't find what you're looking for, please feel free to write in again.