If its a simple enough game, why not program it to work in the browser! It would have been a big plus if you want to target as many platforms as possible, and you could probably get a larger crowd to play it if they were able to play part of it online before purchasing.

As of right now we don't have any semblance of what the game is like, and even 8bit games had demos and shareware versions.

Shameless preview: I'm developing my own set of HTML5 Canvas games that I plan to open source to that others can have some good examples and tutorials to start making their own cross-platform browser games.

The first one so far: http://cloudstork.com/temp/game.html

(Warning: very unfinished means some ugly art.) That's a full playable level, though it wont work well on mobile devices just yet.