The primary site for this game is Metalab at the University of North Carolina, USA.
You can download the game, binary and sources, from http://metalab.unc.edu/pub/Linux/games/arcade/blackpenguin-0.2.tar.gz.
For your convenience and if you don't need the sources anyway you can download a Binary-only version from this site. (318.658 octets)

Enjoy!