Defendguin is kinda a clone of Defender on the Atari 2600, developed by Bob Polaro of Atari and released in 1981. Defendguin is a game by Bill Kendrick from newbreedsoftware.com
This game took me the best part of 10 days to port and has been worth every hour. It is an addictive game with a fulfilling reward at the end; you get to kill a huge mutant Bill Gates boss!!
This is release 0.1, if you have any suggestions for a possible release 0.2 please post your comments here :)