Lately I am enjoying playing Defense Grid 2. The follow up to the excellent first Defense Grid from 2008. I have been recording my efforts on my Zimmy910 youtube channel. It’s not a blind play through though, I have been playing the missions at least once before. Some even more (like mission 7, the hardest so far IMHO). Makes it a bit more interesting I think, since I can come up with a better solution for the Tower Defense puzzle than on my first playthrough.