Wow. I'm sure there are examples that might prove your point, but those are some of ugliest icons I've ever seen. The second one looks like it's straight from Windows 3.1.
The icon is a perfect representation of the game. I don't have to guess what it might be.
I chose icons I consider good looking. If you think they are ugly, that is a subjective matter. Also keep in mind that they are displayed much smaller on the screen.
The point I was trying to imply is that icons can much better represent their app if they are not forced to abide to a standard of shape or style.
