Hehe, but if somebody who codes faster than you (or has people to help), and they complete the game first, you might just lose the credit for 'being the first'.
I'm also slightly paranoid about my game ideas. I recently got a great game idea (and as far as I can tell, quite unique), and I've love to get feedback on it and share it. But I'm also afraid people might copy the idea

And if they do, they'll most likely have the game out before me, since I procrastinate and am always distracted by other stuff ^^