No, not really! I've been developing this game for almost a year now. It's just a coincidence that the GMTK gamejam's theme also resembles my game's theme.
I did try to participate though! The rules did say that pre-existing code and art was allowed. But I'm too much of an idiot, I made a mistake and deleted my submission in the process (and it is unfair to the other competitors)... Maybe it's for the best, who knows.
Thank you for your comments.