Updated: Feb 28
This is more for myself, but maybe it will be a useful website for some of you as well.
I found this website with some free PowerPoint presentation games for lower level students. The owner of the website is an ALT herself with a graphic design background, so lots of the stuff are very esthetically pleasing and easy to use. You can tweak the powerpoint to the subjects your students are learning right now, or modify them to suit your level.