I enjoyed it. The controls take a little getting used to, but for me it didn’t take long at all. It reminds me of some good times playing Trauma Center on the Wii.
The point about open source just concerns whether or not you shared your game’s source code. If you haven’t already, I recommend integrating Git into your workflow to reduce the risk of losing any of your hard work to near-zero. After that, going open-source or not is just a matter of whether or not you share your Git repository. (EDIT: as well as what license you choose to share it under)