I got to wave 12 and then accidentally clicked out of the game screen and onto a bookmark, losing my progress. 👻
The game is pretty fun but having the upgrades be limited to the moon feels constraining. Most waves the moon wasn't relevant as I was able to blast the viruses before they reached the planet. And when a virus does reach the planet the moon will hit them, at most, once which isn't super useful. I opted to put almost all the points into moon speed with a few into size and one into power. I could have made it much more powerful but it would never have hit anything, and I suppose making it much better instead of much faster might have been more useful but, as said earlier, the laser is still going to do most of the work.