BUT THEY'RE NOT!
In a game on armorgames.com (Called Peunguin Attack! 3) you have to kill the penguins. They're evil little devils. They're trying to get to your castle so they can attack it. And that's bad. There are all sorts of defense mechanisms to take them out. You can use this little electrocution-y deal-y thing to, well, electrocute them. There's also a gun thing. And a flame thrower thing. It's pretty awesome. This game is kind of a Bloon's type game. You just don't want to penguins to get through your defenses. It's addicting.
Another favorite game of Info-Pro 1-2 is Rabbit Rustler.
You fly around in your little hovercraft thing and place carrots to lure the rabbits to your teleporter to save them from being made into rabbit stew. It's absolutely ridiculous, but it's pretty fun. It's on andkon.com.
Both of these websites have a lot of fun games in many different genres. You're sure to find something you'll enjoy on either one.