Ask HN: Will my game benefit from being open source?

I've been coding for about two years. At this point I can more or less hack together the game I want, but the code won't be very efficient. It occurred to me that I could open source the game, forcing me to confront my own limitations.

Here's the part I have trouble with. Ideally I'd like to get compensation for my work, and if the game is in paid app form (Android), is open source a good idea at all? Is there a way for me to protect my app while still making the code available?

I could contribute to an already existing project, but I feel that at my current level I would just mess up their codebase.