This version of Chicken Invaders is probably the best one yet. It is honestly just mindless button pressing, or mouse clicking, which ever you prefer, and that is why it's so fun. It is the most basic game ever made, yet one of the most fun. The crazy thing is, there are so many great features mixed into such a small game. There are 120 waves, a bunch of power-ups, and a bunch of different types of bullets to use, some being more powerful. I personally prefer the red bullets, because they are the most powerful.
I will admit though, this is definitely the most difficult of the series. You can acquire a higher score, but the overall game and bosses are tougher to beat.
I know I sound like a nerd, but if you try this game, you will catch yourself being a nerd too. This is one of the greatest games I have ever played.
10/10