If you are trying to install PIX Frogger in Ubuntu 32 bit, you should have no problem. If you are trying to install it on Ubuntu 64 bit, however, you will see an error like this:

sudo apt-get install pixfrogger

...

Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:

 pixfrogger : Depends: fenix but it is not installable

E: Broken packages

To resolve this issue, we will download a 64 bit fenix.deb file and install it.

wget http://mirror.ne.gov/ubuntu/pool/universe/f/fenix/fenix_0.92a.dfsg1-3ubuntu2_amd64.deb

sudo dpkg -i fenix_0.92a.dfsg1-3ubuntu2_amd64.deb

Now you should be set to install PIX Frogger:

sudo apt-get install pixfrogger

If you want to see the game in action, check it out here:

http://www.youtube.com/watch?v=WpcxLOg6s7c

For Windows users, here is the download for you:

http://www.itswapshop.com/sites/default/files/pixfrogger-1.1.zip