Hi,
I have dabbled in game programming myself - mainly XNA with the microsoft framework and C#. What language are you programming in? Do you use a framework?
Basically, you are what they call an Indie game programmer. At this point in time, your best options are to release the game as shareware with a try before you buy option (play with limited features or only play level 1 if not registered). You can also see if you can get the following guys interested :
http://indiegames.com/blog/
OR
http://www.rockpapershotgun.com/
then you are on your way because they will post a review of your game if they like it!
You can even write the game onto cd's yourself and sell it at flea markets? Just make sure the installation is painless (include all the needed libraries, interfaces etc.)
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