Smack the Gigl is a pretty fun and simple game app for the iPhone and iPad featuring the cute Gugl from Tauyasui, the maker of the popular Carl and Gugl apps. This is available for free download for a limited time. Normally, it is $0.99. You may be able to grab some other apps from this developer for free.
Tap on the Gugls as fast as you can to smoosh them before they take over your screen. There are tricky ones that split in two and other ones that must be smooshed by tapping twice. Get them before they turn red. Be careful and avoid the ones that look like they have chicken pox. If you get more than 5 red ones, your games is over. I personally think that Gugls look like imaginary bacteria. This is what my mind imagines that it looks like when your immune system is fighting off germs. There is a kid level and regular level for adult play which is challenging.
Recommended for 2 and up.