Escape from the bats in this "dalecks" clone. (The original game had a Dr. Who theme.) Arrow keys move the cat around. Try to get the bats to crash into each other. You can press S to engage a 2-second shield that can destroy the bats also. Press T to randomly teleport away.
The shield takes 10 seconds to recharge and the teleport takes 5 seconds.
This is featured on the "Invent with Scratch" screencast by Al Sweigart at http://inventwithscratch.com/daleks-game/
Learn to program games with this free online Scratch course: https://inventwithscratch.com/class