Pac Defence is a tower defence game where the aim is to destroy the evil pacs before they can reach their goal off the side of the screen. To stop them you can choose from 17 towers to build, or enlist the pac's greatest foe, the ghost. Towers cost money, so you cannot build as many as you want, and thus you must carefully choose which tower you want to build and where you want to build it. You gain money by damaging and destroying the pacs, and at the end of each level. Additionally, towers gain level ups after inflicting certain amounts of pain on the pacs.
Yeah, I found that problem too, the day after uploading, so changed like 2 lines of code to fix it and uploaded the new version, without making a new release because it was so trivial. So it should be fixed now.
Thanks for letting me know of the bug though.