Here is a video of me showing gameplay completion of a good aim and shoot game on armorgames called Zomballoons. Yes, it involves zombies and balloons with a lot of arrows. You play here as the doorman to a very classy hotel whose policy is "no shirt, no shoes, no brain, no service". I think that translates to "shoot zombies when they try to board a balloon in order to get inside the hotel".
My short review is that the game is short and fun to play. Really good if you just want to get into some not so intense mouse game. Meanwhile, here is
Zomballoons walkthrough showing game completed in 2 times speed video.