Dark Unicorn Productions is one of the hottest Shareware programming companies in the world. They are meanwhile out of business, but nevertheless their spirit and software lives on.
One of their best selling games of all time and probably one of the most famous shareware games ever is Scorched Tanks. It's an amazing artillery strategy game with thousands of features, which made this game write history. I think the authour Michael Welch deserves an award for this game.
Many other great shareware games were released by this company. Tomcat, Flying Tigers or the great Blue Angel 69 clone Psycho Squares, which was created by Shane R. Monroe, the founder of Dark Unicorn Productions himself.
If you're interested in more infos about this company and their current products, have a look at the Dark Unicorn Productions homepage. | 
Scorched Tanks
Tomcat
Psycho Squares |