Just a quick note to let you know that Zen of Sudoku is done! The game is actually everything I wanted it to be and I'm really happy with it.
I got it working on Steam this week as well and it will be launching there first. After that it should start showing up on some other big portals. I have no idea how well it's going to do but I'm optimistic!
I will update the version at www.zenofsudoku.com shortly, as soon as I'm sure it won't require any fixes or tweaks.
Thanks for your help and support everyone!